Finding citations inside books, can be difficult. Digitized books make it somewhat easier.
Direct Link: https://fitchburgstate.screencasthost.com/watch/cr6ODlVlluA
Embed Code: <div id="som-player" class="som-embed-player" data-id="cr6ODlVlluA"><script src="https://screencast-o-matic.com/player/appearance/cr6ODlVlluA"></script><iframe width=100% height=100% style="border:0;" scrolling="no" src="https://screencast-o-matic.com/player/cr6ODlVlluA?width=100%&height=100%&ff=1&title=0" allowfullscreen="true"></iframe></div>