The PBY: A Plane That Made Pilots Nervous. (2013). The History Channel website. Retrieved 8:11, June 19, 2013, from http://www.history.com/videos/the-pby-a-plane-that-made-pilots-nervous.
The PBY: A Plane That Made Pilots Nervous. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/videos/the-pby-a-plane-that-made-pilots-nervous [Accessed 19 Jun 2013].
“The PBY: A Plane That Made Pilots Nervous.” 2013. The History Channel website. Jun 19 2013, 8:11 http://www.history.com/videos/the-pby-a-plane-that-made-pilots-nervous.
“The PBY: A Plane That Made Pilots Nervous,” The History Channel website, 2013, http://www.history.com/videos/the-pby-a-plane-that-made-pilots-nervous [accessed Jun 19, 2013].
“The PBY: A Plane That Made Pilots Nervous,” The History Channel website, http://www.history.com/videos/the-pby-a-plane-that-made-pilots-nervous (accessed Jun 19, 2013).
The PBY: A Plane That Made Pilots Nervous [Internet]. The History Channel website; 2013 [cited 2013 Jun 19] Available from: http://www.history.com/videos/the-pby-a-plane-that-made-pilots-nervous.
The PBY: A Plane That Made Pilots Nervous, http://www.history.com/videos/the-pby-a-plane-that-made-pilots-nervous (last visited Jun 19, 2013).
The PBY: A Plane That Made Pilots Nervous. The History Channel website. 2013. Available at: http://www.history.com/videos/the-pby-a-plane-that-made-pilots-nervous. Accessed Jun 19, 2013.