Nelson Mandela Released From South African Prison. (2013). The History Channel website. Retrieved 4:40, May 24, 2013, from http://www.history.com/speeches/fw-de-klerk-on-nelson-mandelas-release.
Nelson Mandela Released From South African Prison. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/speeches/fw-de-klerk-on-nelson-mandelas-release [Accessed 24 May 2013].
“Nelson Mandela Released From South African Prison.” 2013. The History Channel website. May 24 2013, 4:40 http://www.history.com/speeches/fw-de-klerk-on-nelson-mandelas-release.
“Nelson Mandela Released From South African Prison,” The History Channel website, 2013, http://www.history.com/speeches/fw-de-klerk-on-nelson-mandelas-release [accessed May 24, 2013].
“Nelson Mandela Released From South African Prison,” The History Channel website, http://www.history.com/speeches/fw-de-klerk-on-nelson-mandelas-release (accessed May 24, 2013).
Nelson Mandela Released From South African Prison [Internet]. The History Channel website; 2013 [cited 2013 May 24] Available from: http://www.history.com/speeches/fw-de-klerk-on-nelson-mandelas-release.
Nelson Mandela Released From South African Prison, http://www.history.com/speeches/fw-de-klerk-on-nelson-mandelas-release (last visited May 24, 2013).
Nelson Mandela Released From South African Prison. The History Channel website. 2013. Available at: http://www.history.com/speeches/fw-de-klerk-on-nelson-mandelas-release. Accessed May 24, 2013.