Pancho Villa attacks Columbus, New Mexico. (2013). The History Channel website. Retrieved 3:20, June 19, 2013, from http://www.history.com/this-day-in-history/pancho-villa-attacks-columbus-new-mexico.
Pancho Villa attacks Columbus, New Mexico. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/pancho-villa-attacks-columbus-new-mexico [Accessed 19 Jun 2013].
“Pancho Villa attacks Columbus, New Mexico.” 2013. The History Channel website. Jun 19 2013, 3:20 http://www.history.com/this-day-in-history/pancho-villa-attacks-columbus-new-mexico.
“Pancho Villa attacks Columbus, New Mexico,” The History Channel website, 2013, http://www.history.com/this-day-in-history/pancho-villa-attacks-columbus-new-mexico [accessed Jun 19, 2013].
“Pancho Villa attacks Columbus, New Mexico,” The History Channel website, http://www.history.com/this-day-in-history/pancho-villa-attacks-columbus-new-mexico (accessed Jun 19, 2013).
Pancho Villa attacks Columbus, New Mexico [Internet]. The History Channel website; 2013 [cited 2013 Jun 19] Available from: http://www.history.com/this-day-in-history/pancho-villa-attacks-columbus-new-mexico.
Pancho Villa attacks Columbus, New Mexico, http://www.history.com/this-day-in-history/pancho-villa-attacks-columbus-new-mexico (last visited Jun 19, 2013).
Pancho Villa attacks Columbus, New Mexico. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/pancho-villa-attacks-columbus-new-mexico. Accessed Jun 19, 2013.