The Dark Knight opens with highest-grossing weekend. (2013). The History Channel website. Retrieved 11:57, May 25, 2013, from http://www.history.com/this-day-in-history/the-dark-knight-opens-with-highest-grossing-weekend.
The Dark Knight opens with highest-grossing weekend. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/the-dark-knight-opens-with-highest-grossing-weekend [Accessed 25 May 2013].
“The Dark Knight opens with highest-grossing weekend.” 2013. The History Channel website. May 25 2013, 11:57 http://www.history.com/this-day-in-history/the-dark-knight-opens-with-highest-grossing-weekend.
“The Dark Knight opens with highest-grossing weekend,” The History Channel website, 2013, http://www.history.com/this-day-in-history/the-dark-knight-opens-with-highest-grossing-weekend [accessed May 25, 2013].
“The Dark Knight opens with highest-grossing weekend,” The History Channel website, http://www.history.com/this-day-in-history/the-dark-knight-opens-with-highest-grossing-weekend (accessed May 25, 2013).
The Dark Knight opens with highest-grossing weekend [Internet]. The History Channel website; 2013 [cited 2013 May 25] Available from: http://www.history.com/this-day-in-history/the-dark-knight-opens-with-highest-grossing-weekend.
The Dark Knight opens with highest-grossing weekend, http://www.history.com/this-day-in-history/the-dark-knight-opens-with-highest-grossing-weekend (last visited May 25, 2013).
The Dark Knight opens with highest-grossing weekend. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/the-dark-knight-opens-with-highest-grossing-weekend. Accessed May 25, 2013.