First commercial movie screened. (2013). The History Channel website. Retrieved 12:29, May 19, 2013, from http://www.history.com/this-day-in-history/first-commercial-movie-screened.
First commercial movie screened. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/first-commercial-movie-screened [Accessed 19 May 2013].
“First commercial movie screened.” 2013. The History Channel website. May 19 2013, 12:29 http://www.history.com/this-day-in-history/first-commercial-movie-screened.
“First commercial movie screened,” The History Channel website, 2013, http://www.history.com/this-day-in-history/first-commercial-movie-screened [accessed May 19, 2013].
“First commercial movie screened,” The History Channel website, http://www.history.com/this-day-in-history/first-commercial-movie-screened (accessed May 19, 2013).
First commercial movie screened [Internet]. The History Channel website; 2013 [cited 2013 May 19] Available from: http://www.history.com/this-day-in-history/first-commercial-movie-screened.
First commercial movie screened, http://www.history.com/this-day-in-history/first-commercial-movie-screened (last visited May 19, 2013).
First commercial movie screened. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/first-commercial-movie-screened. Accessed May 19, 2013.