Hangars.. (2013). The History Channel website. Retrieved 11:17, May 21, 2013, from http://www.history.com/shows/modern-marvels/episodes/all-episodes.
Hangars.. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/shows/modern-marvels/episodes/all-episodes [Accessed 21 May 2013].
“Hangars..” 2013. The History Channel website. May 21 2013, 11:17 http://www.history.com/shows/modern-marvels/episodes/all-episodes.
“Hangars.,” The History Channel website, 2013, http://www.history.com/shows/modern-marvels/episodes/all-episodes [accessed May 21, 2013].
“Hangars.,” The History Channel website, http://www.history.com/shows/modern-marvels/episodes/all-episodes (accessed May 21, 2013).
Hangars. [Internet]. The History Channel website; 2013 [cited 2013 May 21] Available from: http://www.history.com/shows/modern-marvels/episodes/all-episodes.
Hangars., http://www.history.com/shows/modern-marvels/episodes/all-episodes (last visited May 21, 2013).
Hangars.. The History Channel website. 2013. Available at: http://www.history.com/shows/modern-marvels/episodes/all-episodes. Accessed May 21, 2013.