Secretariat wins Triple Crown. (2013). The History Channel website. Retrieved 10:23, May 22, 2013, from http://www.history.com/this-day-in-history/secretariat-wins-the-triple-crown.
Secretariat wins Triple Crown. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/secretariat-wins-the-triple-crown [Accessed 22 May 2013].
“Secretariat wins Triple Crown.” 2013. The History Channel website. May 22 2013, 10:23 http://www.history.com/this-day-in-history/secretariat-wins-the-triple-crown.
“Secretariat wins Triple Crown,” The History Channel website, 2013, http://www.history.com/this-day-in-history/secretariat-wins-the-triple-crown [accessed May 22, 2013].
“Secretariat wins Triple Crown,” The History Channel website, http://www.history.com/this-day-in-history/secretariat-wins-the-triple-crown (accessed May 22, 2013).
Secretariat wins Triple Crown [Internet]. The History Channel website; 2013 [cited 2013 May 22] Available from: http://www.history.com/this-day-in-history/secretariat-wins-the-triple-crown.
Secretariat wins Triple Crown, http://www.history.com/this-day-in-history/secretariat-wins-the-triple-crown (last visited May 22, 2013).
Secretariat wins Triple Crown. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/secretariat-wins-the-triple-crown. Accessed May 22, 2013.