Episode 3: Westward. (2013). The History Channel website. Retrieved 8:29, May 23, 2013, from http://www.history.com/shows/america-the-story-of-us/articles/episode-3-westward.
Episode 3: Westward. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/shows/america-the-story-of-us/articles/episode-3-westward [Accessed 23 May 2013].
“Episode 3: Westward.” 2013. The History Channel website. May 23 2013, 8:29 http://www.history.com/shows/america-the-story-of-us/articles/episode-3-westward.
“Episode 3: Westward,” The History Channel website, 2013, http://www.history.com/shows/america-the-story-of-us/articles/episode-3-westward [accessed May 23, 2013].
“Episode 3: Westward,” The History Channel website, http://www.history.com/shows/america-the-story-of-us/articles/episode-3-westward (accessed May 23, 2013).
Episode 3: Westward [Internet]. The History Channel website; 2013 [cited 2013 May 23] Available from: http://www.history.com/shows/america-the-story-of-us/articles/episode-3-westward.
Episode 3: Westward, http://www.history.com/shows/america-the-story-of-us/articles/episode-3-westward (last visited May 23, 2013).
Episode 3: Westward. The History Channel website. 2013. Available at: http://www.history.com/shows/america-the-story-of-us/articles/episode-3-westward. Accessed May 23, 2013.