About How the States Got Their Shapes. (2013). The History Channel website. Retrieved 2:06, May 23, 2013, from http://www.history.com/shows/how-the-states-got-their-shapes/articles/about-how-the-states-got-their-shapes.
About How the States Got Their Shapes. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/shows/how-the-states-got-their-shapes/articles/about-how-the-states-got-their-shapes [Accessed 23 May 2013].
“About How the States Got Their Shapes.” 2013. The History Channel website. May 23 2013, 2:06 http://www.history.com/shows/how-the-states-got-their-shapes/articles/about-how-the-states-got-their-shapes.
“About How the States Got Their Shapes,” The History Channel website, 2013, http://www.history.com/shows/how-the-states-got-their-shapes/articles/about-how-the-states-got-their-shapes [accessed May 23, 2013].
“About How the States Got Their Shapes,” The History Channel website, http://www.history.com/shows/how-the-states-got-their-shapes/articles/about-how-the-states-got-their-shapes (accessed May 23, 2013).
About How the States Got Their Shapes [Internet]. The History Channel website; 2013 [cited 2013 May 23] Available from: http://www.history.com/shows/how-the-states-got-their-shapes/articles/about-how-the-states-got-their-shapes.
About How the States Got Their Shapes, http://www.history.com/shows/how-the-states-got-their-shapes/articles/about-how-the-states-got-their-shapes (last visited May 23, 2013).
About How the States Got Their Shapes. The History Channel website. 2013. Available at: http://www.history.com/shows/how-the-states-got-their-shapes/articles/about-how-the-states-got-their-shapes. Accessed May 23, 2013.