Smithson's curious bequest. (2013). The History Channel website. Retrieved 5:01, May 18, 2013, from http://www.history.com/this-day-in-history/smithsons-curious-bequest.
Smithson's curious bequest. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/smithsons-curious-bequest [Accessed 18 May 2013].
“Smithson's curious bequest.” 2013. The History Channel website. May 18 2013, 5:01 http://www.history.com/this-day-in-history/smithsons-curious-bequest.
“Smithson's curious bequest,” The History Channel website, 2013, http://www.history.com/this-day-in-history/smithsons-curious-bequest [accessed May 18, 2013].
“Smithson's curious bequest,” The History Channel website, http://www.history.com/this-day-in-history/smithsons-curious-bequest (accessed May 18, 2013).
Smithson's curious bequest [Internet]. The History Channel website; 2013 [cited 2013 May 18] Available from: http://www.history.com/this-day-in-history/smithsons-curious-bequest.
Smithson's curious bequest, http://www.history.com/this-day-in-history/smithsons-curious-bequest (last visited May 18, 2013).
Smithson's curious bequest. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/smithsons-curious-bequest. Accessed May 18, 2013.