U.S. bombs Cambodia for the first time. (2013). The History Channel website. Retrieved 3:43, May 20, 2013, from http://www.history.com/this-day-in-history/us-bombs-cambodia-for-the-first-time.
U.S. bombs Cambodia for the first time. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/us-bombs-cambodia-for-the-first-time [Accessed 20 May 2013].
“U.S. bombs Cambodia for the first time.” 2013. The History Channel website. May 20 2013, 3:43 http://www.history.com/this-day-in-history/us-bombs-cambodia-for-the-first-time.
“U.S. bombs Cambodia for the first time,” The History Channel website, 2013, http://www.history.com/this-day-in-history/us-bombs-cambodia-for-the-first-time [accessed May 20, 2013].
“U.S. bombs Cambodia for the first time,” The History Channel website, http://www.history.com/this-day-in-history/us-bombs-cambodia-for-the-first-time (accessed May 20, 2013).
U.S. bombs Cambodia for the first time [Internet]. The History Channel website; 2013 [cited 2013 May 20] Available from: http://www.history.com/this-day-in-history/us-bombs-cambodia-for-the-first-time.
U.S. bombs Cambodia for the first time, http://www.history.com/this-day-in-history/us-bombs-cambodia-for-the-first-time (last visited May 20, 2013).
U.S. bombs Cambodia for the first time. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/us-bombs-cambodia-for-the-first-time. Accessed May 20, 2013.