Supreme Court legalizes abortion. (2013). The History Channel website. Retrieved 5:12, May 20, 2013, from http://www.history.com/this-day-in-history/supreme-court-legalizes-abortion.
Supreme Court legalizes abortion. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/supreme-court-legalizes-abortion [Accessed 20 May 2013].
“Supreme Court legalizes abortion.” 2013. The History Channel website. May 20 2013, 5:12 http://www.history.com/this-day-in-history/supreme-court-legalizes-abortion.
“Supreme Court legalizes abortion,” The History Channel website, 2013, http://www.history.com/this-day-in-history/supreme-court-legalizes-abortion [accessed May 20, 2013].
“Supreme Court legalizes abortion,” The History Channel website, http://www.history.com/this-day-in-history/supreme-court-legalizes-abortion (accessed May 20, 2013).
Supreme Court legalizes abortion [Internet]. The History Channel website; 2013 [cited 2013 May 20] Available from: http://www.history.com/this-day-in-history/supreme-court-legalizes-abortion.
Supreme Court legalizes abortion, http://www.history.com/this-day-in-history/supreme-court-legalizes-abortion (last visited May 20, 2013).
Supreme Court legalizes abortion. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/supreme-court-legalizes-abortion. Accessed May 20, 2013.