@online{ slideshare:vtpchap4,
    author = "Hector Camba Lainez",
    title = "Cap4 implementing vtp",
    year = "2010",
    url = {https://www.slideshare.net/lucky0679/cap4-implementing-vtp},
    note = "[Online; accessed 22-May-2017]"
}

@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"
}