Presidents and Their Children. (2013). The History Channel website. Retrieved 3:52, May 23, 2013, from http://www.history.com/photos/presidents-and-their-children.
Presidents and Their Children. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/photos/presidents-and-their-children [Accessed 23 May 2013].
“Presidents and Their Children.” 2013. The History Channel website. May 23 2013, 3:52 http://www.history.com/photos/presidents-and-their-children.
“Presidents and Their Children,” The History Channel website, 2013, http://www.history.com/photos/presidents-and-their-children [accessed May 23, 2013].
“Presidents and Their Children,” The History Channel website, http://www.history.com/photos/presidents-and-their-children (accessed May 23, 2013).
Presidents and Their Children [Internet]. The History Channel website; 2013 [cited 2013 May 23] Available from: http://www.history.com/photos/presidents-and-their-children.
Presidents and Their Children, http://www.history.com/photos/presidents-and-their-children (last visited May 23, 2013).
Presidents and Their Children. The History Channel website. 2013. Available at: http://www.history.com/photos/presidents-and-their-children. Accessed May 23, 2013.