U.S. aircraft carrier Langley is sunk. (2013). The History Channel website. Retrieved 7:52, June 19, 2013, from http://www.history.com/this-day-in-history/us-aircraft-carrier-langley-is-sunk.
U.S. aircraft carrier Langley is sunk. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/us-aircraft-carrier-langley-is-sunk [Accessed 19 Jun 2013].
“U.S. aircraft carrier Langley is sunk.” 2013. The History Channel website. Jun 19 2013, 7:52 http://www.history.com/this-day-in-history/us-aircraft-carrier-langley-is-sunk.
“U.S. aircraft carrier Langley is sunk,” The History Channel website, 2013, http://www.history.com/this-day-in-history/us-aircraft-carrier-langley-is-sunk [accessed Jun 19, 2013].
“U.S. aircraft carrier Langley is sunk,” The History Channel website, http://www.history.com/this-day-in-history/us-aircraft-carrier-langley-is-sunk (accessed Jun 19, 2013).
U.S. aircraft carrier Langley is sunk [Internet]. The History Channel website; 2013 [cited 2013 Jun 19] Available from: http://www.history.com/this-day-in-history/us-aircraft-carrier-langley-is-sunk.
U.S. aircraft carrier Langley is sunk, http://www.history.com/this-day-in-history/us-aircraft-carrier-langley-is-sunk (last visited Jun 19, 2013).
U.S. aircraft carrier Langley is sunk. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/us-aircraft-carrier-langley-is-sunk. Accessed Jun 19, 2013.