North Vietnamese launch major attack on An Loc. (2013). The History Channel website. Retrieved 9:44, May 23, 2013, from http://www.history.com/this-day-in-history/north-vietnamese-launch-major-attack-on-an-loc.
North Vietnamese launch major attack on An Loc. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/north-vietnamese-launch-major-attack-on-an-loc [Accessed 23 May 2013].
“North Vietnamese launch major attack on An Loc.” 2013. The History Channel website. May 23 2013, 9:44 http://www.history.com/this-day-in-history/north-vietnamese-launch-major-attack-on-an-loc.
“North Vietnamese launch major attack on An Loc,” The History Channel website, 2013, http://www.history.com/this-day-in-history/north-vietnamese-launch-major-attack-on-an-loc [accessed May 23, 2013].
“North Vietnamese launch major attack on An Loc,” The History Channel website, http://www.history.com/this-day-in-history/north-vietnamese-launch-major-attack-on-an-loc (accessed May 23, 2013).
North Vietnamese launch major attack on An Loc [Internet]. The History Channel website; 2013 [cited 2013 May 23] Available from: http://www.history.com/this-day-in-history/north-vietnamese-launch-major-attack-on-an-loc.
North Vietnamese launch major attack on An Loc, http://www.history.com/this-day-in-history/north-vietnamese-launch-major-attack-on-an-loc (last visited May 23, 2013).
North Vietnamese launch major attack on An Loc. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/north-vietnamese-launch-major-attack-on-an-loc. Accessed May 23, 2013.