U.S. officials deny any involvement in bombing of North Vietnam.. (2013). The History Channel website. Retrieved 1:42, May 25, 2013, from http://www.history.com/this-day-in-history/us-officials-deny-any-involvement-in-bombing-of-north-vietnam.
U.S. officials deny any involvement in bombing of North Vietnam.. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/us-officials-deny-any-involvement-in-bombing-of-north-vietnam [Accessed 25 May 2013].
“U.S. officials deny any involvement in bombing of North Vietnam..” 2013. The History Channel website. May 25 2013, 1:42 http://www.history.com/this-day-in-history/us-officials-deny-any-involvement-in-bombing-of-north-vietnam.
“U.S. officials deny any involvement in bombing of North Vietnam.,” The History Channel website, 2013, http://www.history.com/this-day-in-history/us-officials-deny-any-involvement-in-bombing-of-north-vietnam [accessed May 25, 2013].
“U.S. officials deny any involvement in bombing of North Vietnam.,” The History Channel website, http://www.history.com/this-day-in-history/us-officials-deny-any-involvement-in-bombing-of-north-vietnam (accessed May 25, 2013).
U.S. officials deny any involvement in bombing of North Vietnam. [Internet]. The History Channel website; 2013 [cited 2013 May 25] Available from: http://www.history.com/this-day-in-history/us-officials-deny-any-involvement-in-bombing-of-north-vietnam.
U.S. officials deny any involvement in bombing of North Vietnam., http://www.history.com/this-day-in-history/us-officials-deny-any-involvement-in-bombing-of-north-vietnam (last visited May 25, 2013).
U.S. officials deny any involvement in bombing of North Vietnam.. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/us-officials-deny-any-involvement-in-bombing-of-north-vietnam. Accessed May 25, 2013.