diff --git a/docs/changes/2.x/2.0.0.md b/docs/changes/2.x/2.0.0.md
index a299d15b41..06a7ba3675 100644
--- a/docs/changes/2.x/2.0.0.md
+++ b/docs/changes/2.x/2.0.0.md
@@ -7,6 +7,7 @@
 - IOFactory : Added extractVariables method to extract variables from a document [@sibalonat](https://github.com/sibalonat) in [#2515](https://github.com/PHPOffice/PHPWord/pull/2515)
 - PDF Writer : Documented how to specify a PDF renderer, when working with the PDF writer, as well as the three available choices by [@settermjd](https://github.com/settermjd) in [#2642](https://github.com/PHPOffice/PHPWord/pull/2642)
 - Word2007 Reader: Support for Paragraph Border Style by [@damienfa](https://github.com/damienfa) in [#2651](https://github.com/PHPOffice/PHPWord/pull/2651)
+- Word2007 Writer: Support for field REF by [@crystoline](https://github.com/crystoline) in [#2652](https://github.com/PHPOffice/PHPWord/pull/2652)
 
 ### Bug fixes
 
diff --git a/docs/usage/elements/field.md b/docs/usage/elements/field.md
index 415b4d170e..1cafd18ef8 100644
--- a/docs/usage/elements/field.md
+++ b/docs/usage/elements/field.md
@@ -26,24 +26,24 @@ For instance for the INDEX field, you can do the following (See `Index Field for
 ``` php
 <?php
 
-//the $fieldText can be either a simple string
+// the $fieldText can be either a simple string
 $fieldText = 'The index value';
 
-//or a 'TextRun', to be able to format the text you want in the index
+// or a 'TextRun', to be able to format the text you want in the index
 $fieldText = new TextRun();
 $fieldText->addText('My ');
 $fieldText->addText('bold index', ['bold' => true]);
 $fieldText->addText(' entry');
 $section->addField('XE', array(), array(), $fieldText);
 
-//this actually adds the index
+// this actually adds the index
 $section->addField('INDEX', array(), array('\\e "	" \\h "A" \\c "3"'), 'right click to update index');
 
-//Adding reference to a bookmark
+// Adding reference to a bookmark
 $fieldText->addField('REF', [
-      'name' => 'bookmark'
-  ], [
-      'InsertParagraphNumberRelativeContext',
-      'CreateHyperLink',
-  ]);
+    'name' => 'bookmark'
+], [
+    'InsertParagraphNumberRelativeContext',
+    'CreateHyperLink',
+]);
 ```
diff --git a/src/PhpWord/Element/Field.php b/src/PhpWord/Element/Field.php
index ed4225f3f1..a828aaa02e 100644
--- a/src/PhpWord/Element/Field.php
+++ b/src/PhpWord/Element/Field.php
@@ -91,10 +91,10 @@ class Field extends AbstractElement
             ],
             'options' => ['Path', 'PreserveFormat'],
         ],
-        'REF' => array(
-            'properties' => array('name' => ''),
-            'options'    => array('f', 'h', 'n', 'p', 'r', 't', 'w'),
-        ),
+        'REF' => [
+            'properties' => ['name' => ''],
+            'options' => ['f', 'h', 'n', 'p', 'r', 't', 'w'],
+        ],
     ];
 
     /**
diff --git a/src/PhpWord/Writer/Word2007/Element/Field.php b/src/PhpWord/Writer/Word2007/Element/Field.php
index f393883b1b..a8be717860 100644
--- a/src/PhpWord/Writer/Word2007/Element/Field.php
+++ b/src/PhpWord/Writer/Word2007/Element/Field.php
@@ -228,11 +228,9 @@ private function buildPropertiesAndOptions(\PhpOffice\PhpWord\Element\Field $ele
     }
 
     /**
-     * Writes a REF field
-     *
-     * @param \PhpOffice\PhpWord\Element\Field $element
+     * Writes a REF field.
      */
-    protected function writeRef(\PhpOffice\PhpWord\Element\Field $element)
+    protected function writeRef(\PhpOffice\PhpWord\Element\Field $element): void
     {
         $xmlWriter = $this->getXmlWriter();
         $this->startElementP();
@@ -303,7 +301,7 @@ protected function writeRef(\PhpOffice\PhpWord\Element\Field $element)
         $this->endElementP(); // w:p
     }
 
-    private function convertRefOption($optionKey, $optionValue)
+    private function convertRefOption(string $optionKey, string $optionValue): string
     {
         if ($optionKey === 'NumberSeperatorSequence') {
             return '\\d ' . $optionValue;
diff --git a/tests/PhpWord/Writer/Word2007/Element/FieldTest.php b/tests/PhpWord/Writer/Word2007/Element/FieldTest.php
index cf8e0fc834..c76bc70057 100644
--- a/tests/PhpWord/Writer/Word2007/Element/FieldTest.php
+++ b/tests/PhpWord/Writer/Word2007/Element/FieldTest.php
@@ -3,38 +3,38 @@
 namespace PhpOffice\PhpWord\Writer\Word2007\Element;
 
 use PhpOffice\PhpWord\PhpWord;
-use PhpOffice\PhpWord\TestHelperDOCX;
+use PhpOffice\PhpWordTests\TestHelperDOCX;
 use PHPUnit\Framework\TestCase;
 
 /**
- * Test class for PhpOffice\PhpWord\Writer\Word2007\Field
+ * Test class for PhpOffice\PhpWord\Writer\Word2007\Field.
  */
 class FieldTest extends TestCase
 {
     /**
-     * Executed before each method of the class
+     * Executed before each method of the class.
      */
-    public function tearDown()
+    protected function tearDown(): void
     {
         TestHelperDOCX::clear();
     }
 
     /**
-     * Test Field write
+     * Test Field write.
      */
-    public function testWriteWithRefType()
+    public function testWriteWithRefType(): void
     {
         $phpWord = new PhpWord();
         $section = $phpWord->addSection();
         $section->addField(
             'REF',
-            array(
+            [
                 'name' => 'my-bookmark',
-            ),
-            array(
+            ],
+            [
                 'InsertParagraphNumberRelativeContext',
                 'CreateHyperLink',
-            )
+            ]
         );
 
         $section->addListItem('line one item');
@@ -45,18 +45,14 @@ public function testWriteWithRefType()
         $doc = TestHelperDOCX::getDocument($phpWord, 'Word2007');
 
         $refFieldPath = '/w:document/w:body/w:p[1]/w:r[2]/w:instrText';
-
-        $this->assertTrue($doc->elementExists($refFieldPath));
+        self::assertTrue($doc->elementExists($refFieldPath));
 
         $bookMarkElement = $doc->getElement($refFieldPath);
-
-        $this->assertNotNull($bookMarkElement);
-
-        $this->assertEquals(' REF my-bookmark \r \h ', $bookMarkElement->textContent);
+        self::assertNotNull($bookMarkElement);
+        self::assertEquals(' REF my-bookmark \r \h ', $bookMarkElement->textContent);
 
         $bookmarkPath = '/w:document/w:body/w:bookmarkStart';
-
-        $this->assertTrue($doc->elementExists($bookmarkPath));
-        $this->assertEquals('my-bookmark', $doc->getElementAttribute("$bookmarkPath", 'w:name'));
+        self::assertTrue($doc->elementExists($bookmarkPath));
+        self::assertEquals('my-bookmark', $doc->getElementAttribute("$bookmarkPath", 'w:name'));
     }
 }