Lewis and Clark depart. (2013). The History Channel website. Retrieved 8:55, May 19, 2013, from http://www.history.com/this-day-in-history/lewis-and-clark-depart.
Lewis and Clark depart. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/lewis-and-clark-depart [Accessed 19 May 2013].
“Lewis and Clark depart.” 2013. The History Channel website. May 19 2013, 8:55 http://www.history.com/this-day-in-history/lewis-and-clark-depart.
“Lewis and Clark depart,” The History Channel website, 2013, http://www.history.com/this-day-in-history/lewis-and-clark-depart [accessed May 19, 2013].
“Lewis and Clark depart,” The History Channel website, http://www.history.com/this-day-in-history/lewis-and-clark-depart (accessed May 19, 2013).
Lewis and Clark depart [Internet]. The History Channel website; 2013 [cited 2013 May 19] Available from: http://www.history.com/this-day-in-history/lewis-and-clark-depart.
Lewis and Clark depart, http://www.history.com/this-day-in-history/lewis-and-clark-depart (last visited May 19, 2013).
Lewis and Clark depart. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/lewis-and-clark-depart. Accessed May 19, 2013.