Richard Henry Dana sets sail from Boston Harbor. (2013). The History Channel website. Retrieved 6:51, May 18, 2013, from http://www.history.com/this-day-in-history/richard-henry-dana-sets-sail-from-boston-harbor.
Richard Henry Dana sets sail from Boston Harbor. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/richard-henry-dana-sets-sail-from-boston-harbor [Accessed 18 May 2013].
“Richard Henry Dana sets sail from Boston Harbor.” 2013. The History Channel website. May 18 2013, 6:51 http://www.history.com/this-day-in-history/richard-henry-dana-sets-sail-from-boston-harbor.
“Richard Henry Dana sets sail from Boston Harbor,” The History Channel website, 2013, http://www.history.com/this-day-in-history/richard-henry-dana-sets-sail-from-boston-harbor [accessed May 18, 2013].
“Richard Henry Dana sets sail from Boston Harbor,” The History Channel website, http://www.history.com/this-day-in-history/richard-henry-dana-sets-sail-from-boston-harbor (accessed May 18, 2013).
Richard Henry Dana sets sail from Boston Harbor [Internet]. The History Channel website; 2013 [cited 2013 May 18] Available from: http://www.history.com/this-day-in-history/richard-henry-dana-sets-sail-from-boston-harbor.
Richard Henry Dana sets sail from Boston Harbor, http://www.history.com/this-day-in-history/richard-henry-dana-sets-sail-from-boston-harbor (last visited May 18, 2013).
Richard Henry Dana sets sail from Boston Harbor. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/richard-henry-dana-sets-sail-from-boston-harbor. Accessed May 18, 2013.