Gertrude Ederle becomes first woman to swim English Channel. (2013). The History Channel website. Retrieved 8:53, May 18, 2013, from http://www.history.com/this-day-in-history/gertrude-ederle-becomes-first-woman-to-swim-english-channel.
Gertrude Ederle becomes first woman to swim English Channel. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/gertrude-ederle-becomes-first-woman-to-swim-english-channel [Accessed 18 May 2013].
“Gertrude Ederle becomes first woman to swim English Channel.” 2013. The History Channel website. May 18 2013, 8:53 http://www.history.com/this-day-in-history/gertrude-ederle-becomes-first-woman-to-swim-english-channel.
“Gertrude Ederle becomes first woman to swim English Channel,” The History Channel website, 2013, http://www.history.com/this-day-in-history/gertrude-ederle-becomes-first-woman-to-swim-english-channel [accessed May 18, 2013].
“Gertrude Ederle becomes first woman to swim English Channel,” The History Channel website, http://www.history.com/this-day-in-history/gertrude-ederle-becomes-first-woman-to-swim-english-channel (accessed May 18, 2013).
Gertrude Ederle becomes first woman to swim English Channel [Internet]. The History Channel website; 2013 [cited 2013 May 18] Available from: http://www.history.com/this-day-in-history/gertrude-ederle-becomes-first-woman-to-swim-english-channel.
Gertrude Ederle becomes first woman to swim English Channel, http://www.history.com/this-day-in-history/gertrude-ederle-becomes-first-woman-to-swim-english-channel (last visited May 18, 2013).
Gertrude Ederle becomes first woman to swim English Channel. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/gertrude-ederle-becomes-first-woman-to-swim-english-channel. Accessed May 18, 2013.