diff --git a/REB/REB.csl b/REB/REB.csl
index a30cc92..40b4a85 100644
--- a/REB/REB.csl
+++ b/REB/REB.csl
@@ -218,7 +218,9 @@ interview  ;  Interview
   </macro>
 
   <macro name="sourceIdentifier">
-    <text variable="references" prefix="(" suffix=")"/> <!-- ID of the source in a repertory like CPG or BHG -->
+    <!-- ID of the source in a repertory like CPG or BHG -->
+    <!-- Should be post-processed for the repertory name to be in italics -->
+    <text variable="references" prefix="(" suffix=")"/>
   </macro>
 
   <macro name="sourceDivisionLocator">