North Vietnamese forces open a third front. (2013). The History Channel website. Retrieved 10:39, June 18, 2013, from http://www.history.com/this-day-in-history/north-vietnamese-forces-open-a-third-front.
North Vietnamese forces open a third front. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/north-vietnamese-forces-open-a-third-front [Accessed 18 Jun 2013].
“North Vietnamese forces open a third front.” 2013. The History Channel website. Jun 18 2013, 10:39 http://www.history.com/this-day-in-history/north-vietnamese-forces-open-a-third-front.
“North Vietnamese forces open a third front,” The History Channel website, 2013, http://www.history.com/this-day-in-history/north-vietnamese-forces-open-a-third-front [accessed Jun 18, 2013].
“North Vietnamese forces open a third front,” The History Channel website, http://www.history.com/this-day-in-history/north-vietnamese-forces-open-a-third-front (accessed Jun 18, 2013).
North Vietnamese forces open a third front [Internet]. The History Channel website; 2013 [cited 2013 Jun 18] Available from: http://www.history.com/this-day-in-history/north-vietnamese-forces-open-a-third-front.
North Vietnamese forces open a third front, http://www.history.com/this-day-in-history/north-vietnamese-forces-open-a-third-front (last visited Jun 18, 2013).
North Vietnamese forces open a third front. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/north-vietnamese-forces-open-a-third-front. Accessed Jun 18, 2013.