South Vietnamese troops assume responsibility for guarding border. (2013). The History Channel website. Retrieved 6:35, May 22, 2013, from http://www.history.com/this-day-in-history/south-vietnamese-troops-assume-responsibility-for-guarding-border.
South Vietnamese troops assume responsibility for guarding border. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/south-vietnamese-troops-assume-responsibility-for-guarding-border [Accessed 22 May 2013].
“South Vietnamese troops assume responsibility for guarding border.” 2013. The History Channel website. May 22 2013, 6:35 http://www.history.com/this-day-in-history/south-vietnamese-troops-assume-responsibility-for-guarding-border.
“South Vietnamese troops assume responsibility for guarding border,” The History Channel website, 2013, http://www.history.com/this-day-in-history/south-vietnamese-troops-assume-responsibility-for-guarding-border [accessed May 22, 2013].
“South Vietnamese troops assume responsibility for guarding border,” The History Channel website, http://www.history.com/this-day-in-history/south-vietnamese-troops-assume-responsibility-for-guarding-border (accessed May 22, 2013).
South Vietnamese troops assume responsibility for guarding border [Internet]. The History Channel website; 2013 [cited 2013 May 22] Available from: http://www.history.com/this-day-in-history/south-vietnamese-troops-assume-responsibility-for-guarding-border.
South Vietnamese troops assume responsibility for guarding border, http://www.history.com/this-day-in-history/south-vietnamese-troops-assume-responsibility-for-guarding-border (last visited May 22, 2013).
South Vietnamese troops assume responsibility for guarding border. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/south-vietnamese-troops-assume-responsibility-for-guarding-border. Accessed May 22, 2013.