@online{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},
}

@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},
}

@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}
}