Index: gp-templates/helper-functions.php
===================================================================
--- gp-templates/helper-functions.php	(revision 586)
+++ gp-templates/helper-functions.php	(working copy)
@@ -52,7 +52,9 @@
 }
 
 function references( $project, $entry ) {
-	if ( !$project->source_url_template() ) return;
+	$show_if_no_source_url = apply_filters( 'show_if_no_source_url', true, $project, $entry );
+	if ( ! $entry->references ) return;
+	if ( ! $show_if_no_source_url && ! $project->source_url_template() ) return;
 	?>
 	<?php _e('References:'); ?>
 	<ul class="refs">	
@@ -64,6 +66,10 @@
 				?>
 				<li><a target="_blank" tabindex="-1" href="<?php echo $source_url; ?>"><?php echo $file.':'.$line ?></a></li>
 				<?php
+			else:
+				?>
+				<li><?php echo $file.':'.$line ?></li>
+				<?php
 			endif;
 		endforeach;
 		?>