Most Influential Book. (2013). The History Channel website. Retrieved 4:10, May 21, 2013, from http://www.history.com/shows/america-the-story-of-us/videos/playlists/.
Most Influential Book. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/shows/america-the-story-of-us/videos/playlists/ [Accessed 21 May 2013].
“Most Influential Book.” 2013. The History Channel website. May 21 2013, 4:10 http://www.history.com/shows/america-the-story-of-us/videos/playlists/.
“Most Influential Book,” The History Channel website, 2013, http://www.history.com/shows/america-the-story-of-us/videos/playlists/ [accessed May 21, 2013].
“Most Influential Book,” The History Channel website, http://www.history.com/shows/america-the-story-of-us/videos/playlists/ (accessed May 21, 2013).
Most Influential Book [Internet]. The History Channel website; 2013 [cited 2013 May 21] Available from: http://www.history.com/shows/america-the-story-of-us/videos/playlists/.
Most Influential Book, http://www.history.com/shows/america-the-story-of-us/videos/playlists/ (last visited May 21, 2013).
Most Influential Book. The History Channel website. 2013. Available at: http://www.history.com/shows/america-the-story-of-us/videos/playlists/. Accessed May 21, 2013.