River excursion ends in tragedy. (2013). The History Channel website. Retrieved 4:35, May 22, 2013, from http://www.history.com/this-day-in-history/river-excursion-ends-in-tragedy.
River excursion ends in tragedy. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/river-excursion-ends-in-tragedy [Accessed 22 May 2013].
“River excursion ends in tragedy.” 2013. The History Channel website. May 22 2013, 4:35 http://www.history.com/this-day-in-history/river-excursion-ends-in-tragedy.
“River excursion ends in tragedy,” The History Channel website, 2013, http://www.history.com/this-day-in-history/river-excursion-ends-in-tragedy [accessed May 22, 2013].
“River excursion ends in tragedy,” The History Channel website, http://www.history.com/this-day-in-history/river-excursion-ends-in-tragedy (accessed May 22, 2013).
River excursion ends in tragedy [Internet]. The History Channel website; 2013 [cited 2013 May 22] Available from: http://www.history.com/this-day-in-history/river-excursion-ends-in-tragedy.
River excursion ends in tragedy, http://www.history.com/this-day-in-history/river-excursion-ends-in-tragedy (last visited May 22, 2013).
River excursion ends in tragedy. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/river-excursion-ends-in-tragedy. Accessed May 22, 2013.