diff --git a/en-US/E.xml b/en-US/E.xml
index 700ca00..e8e5754 100644
--- a/en-US/E.xml
+++ b/en-US/E.xml
@@ -7,10 +7,10 @@
 	<title>E</title>
 	 <variablelist>
 		<varlistentry id="e-book">
-			<term>e-book, e-commerce, e-learning, email</term>
+			<term>ebook, e-commerce, e-learning, email</term>
 			 <listitem>
 				<para>
-					Refer to the primary reference for the type of copy you are creating, either AP or IBM.
+					Refer to the primary reference for the type of copy that you are creating.
 				</para>
 			</listitem>
 
@@ -104,6 +104,22 @@
 
 		 </listitem>
 
+		 </varlistentry>
+		<varlistentry id="epub">
+		 <term>EPUB</term>
+			<listitem>
+			 <para>
+				Write as shown, and without any variations in styling or capitalization, to refer to this publishing format.
+				 Do not use EPUB as a noun to refer to an EPUB file. 
+				 For example, instead of writing "in an EPUB", write "in an EPUB file". 
+			 </para>
+			 <para>
+			 EPUB is part of the w3.org publishing standards: 
+			 <ulink url="https://www.w3.org/publishing/epub3/">https://www.w3.org/publishing/epub3/</ulink>
+			 </para>
+
+		 </listitem>
+
 		 </varlistentry>
 		 <varlistentry id="essentially">
 			<term>essentially</term>