diff --git a/REB/REB.csl b/REB/REB.csl
index 60eedbc..407411c 100644
--- a/REB/REB.csl
+++ b/REB/REB.csl
@@ -176,12 +176,21 @@
   </macro>
 
   <macro name="sourceAuthorLong">
-    <names variable="author">
-      <name form="long" initialize="false">
-        <name-part name="given" font-variant="small-caps"/>
-        <name-part name="family" font-variant="small-caps"/>
-      </name>
-    </names>
+    <choose>
+      <if variable="original-author">
+        <names variable="original-author">
+          <name form="long" initialize="false" font-variant="small-caps"/>
+        </names>
+      </if>
+      <else>
+        <names variable="author">
+          <name form="long" initialize="false">
+            <name-part name="given" font-variant="small-caps"/>
+            <name-part name="family" font-variant="small-caps"/>
+          </name>
+        </names>
+      </else>
+    </choose>
   </macro>
 
   <macro name="sourceAuthorShort">