20th annual Academy Awards celebrated. (2013). The History Channel website. Retrieved 8:00, June 19, 2013, from http://www.history.com/this-day-in-history/20th-annual-academy-awards-celebrated.
20th annual Academy Awards celebrated. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/20th-annual-academy-awards-celebrated [Accessed 19 Jun 2013].
“20th annual Academy Awards celebrated.” 2013. The History Channel website. Jun 19 2013, 8:00 http://www.history.com/this-day-in-history/20th-annual-academy-awards-celebrated.
“20th annual Academy Awards celebrated,” The History Channel website, 2013, http://www.history.com/this-day-in-history/20th-annual-academy-awards-celebrated [accessed Jun 19, 2013].
“20th annual Academy Awards celebrated,” The History Channel website, http://www.history.com/this-day-in-history/20th-annual-academy-awards-celebrated (accessed Jun 19, 2013).
20th annual Academy Awards celebrated [Internet]. The History Channel website; 2013 [cited 2013 Jun 19] Available from: http://www.history.com/this-day-in-history/20th-annual-academy-awards-celebrated.
20th annual Academy Awards celebrated, http://www.history.com/this-day-in-history/20th-annual-academy-awards-celebrated (last visited Jun 19, 2013).
20th annual Academy Awards celebrated. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/20th-annual-academy-awards-celebrated. Accessed Jun 19, 2013.