Edward Steichen on Photography as Art Form. (2013). The History Channel website. Retrieved 1:22, May 21, 2013, from http://www.history.com/speeches/photography-as-an-art-form.
Edward Steichen on Photography as Art Form. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/speeches/photography-as-an-art-form [Accessed 21 May 2013].
“Edward Steichen on Photography as Art Form.” 2013. The History Channel website. May 21 2013, 1:22 http://www.history.com/speeches/photography-as-an-art-form.
“Edward Steichen on Photography as Art Form,” The History Channel website, 2013, http://www.history.com/speeches/photography-as-an-art-form [accessed May 21, 2013].
“Edward Steichen on Photography as Art Form,” The History Channel website, http://www.history.com/speeches/photography-as-an-art-form (accessed May 21, 2013).
Edward Steichen on Photography as Art Form [Internet]. The History Channel website; 2013 [cited 2013 May 21] Available from: http://www.history.com/speeches/photography-as-an-art-form.
Edward Steichen on Photography as Art Form, http://www.history.com/speeches/photography-as-an-art-form (last visited May 21, 2013).
Edward Steichen on Photography as Art Form. The History Channel website. 2013. Available at: http://www.history.com/speeches/photography-as-an-art-form. Accessed May 21, 2013.