Surfing icon Duke Kahanamoku (1890–1968) was an Olympic swimmer, film actor, and sheriff of Honolulu, Hawaii.
Duke Kahanamoku. (2013). The Biography Channel website. Retrieved 01:06, May 24, 2013, from http://www.biography.com/people/duke-kahanamoku-9359474.
Duke Kahanamoku. [Internet]. 2013. The Biography Channel website. Available from: http://www.biography.com/people/duke-kahanamoku-9359474 [Accessed 24 May 2013].
"Duke Kahanamoku." 2013. The Biography Channel website. May 24 2013, 01:06 http://www.biography.com/people/duke-kahanamoku-9359474.
"Duke Kahanamoku," The Biography Channel website, 2013, http://www.biography.com/people/duke-kahanamoku-9359474 [accessed May 24, 2013].
"Duke Kahanamoku," The Biography Channel website, http://www.biography.com/people/duke-kahanamoku-9359474 (accessed May 24, 2013).
Duke Kahanamoku [Internet]. The Biography Channel website; 2013 [cited 2013 May 24] Available from: http://www.biography.com/people/duke-kahanamoku-9359474.
Duke Kahanamoku, http://www.biography.com/people/duke-kahanamoku-9359474 (last visited May 24, 2013).
Duke Kahanamoku. The Biography Channel website. 2013. Available at: http://www.biography.com/people/duke-kahanamoku-9359474. Accessed May 24, 2013.