American football player Alan Page became the first defensive player to win the Most Valuable Player award of the National Football League (NFL) in 1971.
Alan Page. (2013). The Biography Channel website. Retrieved 02:46, May 22, 2013, from http://www.biography.com/people/alan-page-39664.
Alan Page. [Internet]. 2013. The Biography Channel website. Available from: http://www.biography.com/people/alan-page-39664 [Accessed 22 May 2013].
"Alan Page." 2013. The Biography Channel website. May 22 2013, 02:46 http://www.biography.com/people/alan-page-39664.
"Alan Page," The Biography Channel website, 2013, http://www.biography.com/people/alan-page-39664 [accessed May 22, 2013].
"Alan Page," The Biography Channel website, http://www.biography.com/people/alan-page-39664 (accessed May 22, 2013).
Alan Page [Internet]. The Biography Channel website; 2013 [cited 2013 May 22] Available from: http://www.biography.com/people/alan-page-39664.
Alan Page, http://www.biography.com/people/alan-page-39664 (last visited May 22, 2013).
Alan Page. The Biography Channel website. 2013. Available at: http://www.biography.com/people/alan-page-39664. Accessed May 22, 2013.