updated wikipedia reference

references.bib

@@ -1,24 +1,24 @@
-@online{vtpchap4,
-    author = {Hector Camba Lainez},
-    title = {Cap4 implementing vtp},
-    year = 2010,
+@online{ slideshare:vtpchap4,
+    author = "Hector Camba Lainez",
+    title = "Cap4 implementing vtp",
+    year = "2010",
     url = {https://www.slideshare.net/lucky0679/cap4-implementing-vtp},
-    note = {Last Accessed: 2017-05-22},
+    note = "[Online; accessed 22-May-2017]"
 }
 
-@misc{wp_spanningtree,
-    title = {Spanning Tree Protocol},
-    year = 2017,
-    url = {https://en.wikipedia.org/w/index.php?title=Spanning_Tree_Protocol&oldid=778662646},
-    urldate = {2017-05-24},
-    note = {Last Accessed: 2017-05-24},
+@misc{ wiki:Spanning_Tree_Protocol,
+	author = "Wikipedia",
+	title = "{Spanning Tree Protocol} --- {W}ikipedia{,} The Free Encyclopedia",
+	year = "2017",
+	howpublished = {\url{http://en.wikipedia.org/w/index.php?title=Spanning\%20Tree\%20Protocol&oldid=778662646}},
+	note = "[Online; accessed 24-May-2017]"
 }
 
 @book{froom2015implementing,
-    author = {Froom, Richard},
-    title = {Implementing Cisco IP switched networks (SWITCH) : foundation learning guide},
-    publisher = {Cisco Press},
-    year = {2015},
-    address = {Indianapolis, IN},
-    isbn = {978-1-58720-664-1}
-}
+    author = "Froom, Richard",
+    title = "Implementing Cisco IP switched networks (SWITCH) : foundation learning guide",
+    publisher = "Cisco Press",
+    year = "2015",
+    address = "Indianapolis{,} IN",
+    isbn = "978-1-58720-664-1"
+}