diff --git a/modern-language-association.csl b/modern-language-association.csl
index db5ca58db1b..658adb5226d 100644
--- a/modern-language-association.csl
+++ b/modern-language-association.csl
@@ -138,6 +138,7 @@
         </else>
       </choose>
       <text variable="version"/>
+      <text variable="medium"/>
     </group>
   </macro>
   <macro name="volume-lowercase">