North Vietnamese forces attempt to cut off Saigon. (2013). The History Channel website. Retrieved 9:08, May 22, 2013, from http://www.history.com/this-day-in-history/north-vietnamese-forces-attempt-to-cut-off-saigon.
North Vietnamese forces attempt to cut off Saigon. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/north-vietnamese-forces-attempt-to-cut-off-saigon [Accessed 22 May 2013].
“North Vietnamese forces attempt to cut off Saigon.” 2013. The History Channel website. May 22 2013, 9:08 http://www.history.com/this-day-in-history/north-vietnamese-forces-attempt-to-cut-off-saigon.
“North Vietnamese forces attempt to cut off Saigon,” The History Channel website, 2013, http://www.history.com/this-day-in-history/north-vietnamese-forces-attempt-to-cut-off-saigon [accessed May 22, 2013].
“North Vietnamese forces attempt to cut off Saigon,” The History Channel website, http://www.history.com/this-day-in-history/north-vietnamese-forces-attempt-to-cut-off-saigon (accessed May 22, 2013).
North Vietnamese forces attempt to cut off Saigon [Internet]. The History Channel website; 2013 [cited 2013 May 22] Available from: http://www.history.com/this-day-in-history/north-vietnamese-forces-attempt-to-cut-off-saigon.
North Vietnamese forces attempt to cut off Saigon, http://www.history.com/this-day-in-history/north-vietnamese-forces-attempt-to-cut-off-saigon (last visited May 22, 2013).
North Vietnamese forces attempt to cut off Saigon. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/north-vietnamese-forces-attempt-to-cut-off-saigon. Accessed May 22, 2013.