North Vietnamese attack South Vietnamese installations. (2013). The History Channel website. Retrieved 9:03, May 25, 2013, from http://www.history.com/this-day-in-history/north-vietnamese-attack-south-vietnamese-installations.
North Vietnamese attack South Vietnamese installations. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/north-vietnamese-attack-south-vietnamese-installations [Accessed 25 May 2013].
“North Vietnamese attack South Vietnamese installations.” 2013. The History Channel website. May 25 2013, 9:03 http://www.history.com/this-day-in-history/north-vietnamese-attack-south-vietnamese-installations.
“North Vietnamese attack South Vietnamese installations,” The History Channel website, 2013, http://www.history.com/this-day-in-history/north-vietnamese-attack-south-vietnamese-installations [accessed May 25, 2013].
“North Vietnamese attack South Vietnamese installations,” The History Channel website, http://www.history.com/this-day-in-history/north-vietnamese-attack-south-vietnamese-installations (accessed May 25, 2013).
North Vietnamese attack South Vietnamese installations [Internet]. The History Channel website; 2013 [cited 2013 May 25] Available from: http://www.history.com/this-day-in-history/north-vietnamese-attack-south-vietnamese-installations.
North Vietnamese attack South Vietnamese installations, http://www.history.com/this-day-in-history/north-vietnamese-attack-south-vietnamese-installations (last visited May 25, 2013).
North Vietnamese attack South Vietnamese installations. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/north-vietnamese-attack-south-vietnamese-installations. Accessed May 25, 2013.