Mary Lou Williams was a jazz pianist who performed with and composed for many of the great jazz artists of the 1940s and '50s.
Mary Lou Williams. (2013). The Biography Channel website. Retrieved 09:37, May 25, 2013, from http://www.biography.com/people/mary-lou-williams-9532632.
Mary Lou Williams. [Internet]. 2013. The Biography Channel website. Available from: http://www.biography.com/people/mary-lou-williams-9532632 [Accessed 25 May 2013].
"Mary Lou Williams." 2013. The Biography Channel website. May 25 2013, 09:37 http://www.biography.com/people/mary-lou-williams-9532632.
"Mary Lou Williams," The Biography Channel website, 2013, http://www.biography.com/people/mary-lou-williams-9532632 [accessed May 25, 2013].
"Mary Lou Williams," The Biography Channel website, http://www.biography.com/people/mary-lou-williams-9532632 (accessed May 25, 2013).
Mary Lou Williams [Internet]. The Biography Channel website; 2013 [cited 2013 May 25] Available from: http://www.biography.com/people/mary-lou-williams-9532632.
Mary Lou Williams, http://www.biography.com/people/mary-lou-williams-9532632 (last visited May 25, 2013).
Mary Lou Williams. The Biography Channel website. 2013. Available at: http://www.biography.com/people/mary-lou-williams-9532632. Accessed May 25, 2013.