Index: wp-content/themes/twentythirteen/style.css
===================================================================
--- wp-content/themes/twentythirteen/style.css	(revision 24243)
+++ wp-content/themes/twentythirteen/style.css	(working copy)
@@ -1681,15 +1681,10 @@
 	color: #e63f2a;
 }
 
-.format-quote .entry-content cite a {
-	border-bottom: 1px dotted #fff;
-	color: #fff;
+.format-quote .entry-content cite:before {
+	content: '\2014\00a0';
 }
 
-.format-quote .entry-content cite a:hover {
-	text-decoration: none;
-}
-
 .format-quote .quote-caption,
 .format-quote blockquote small,
 .format-quote blockquote cite {