Workers complete the famous Gateway Arch in St. Louis, Missouri. (2013). The History Channel website. Retrieved 1:17, May 25, 2013, from http://www.history.com/this-day-in-history/workers-complete-the-famous-gateway-arch-in-st-louis-missouri.
Workers complete the famous Gateway Arch in St. Louis, Missouri. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/workers-complete-the-famous-gateway-arch-in-st-louis-missouri [Accessed 25 May 2013].
“Workers complete the famous Gateway Arch in St. Louis, Missouri.” 2013. The History Channel website. May 25 2013, 1:17 http://www.history.com/this-day-in-history/workers-complete-the-famous-gateway-arch-in-st-louis-missouri.
“Workers complete the famous Gateway Arch in St. Louis, Missouri,” The History Channel website, 2013, http://www.history.com/this-day-in-history/workers-complete-the-famous-gateway-arch-in-st-louis-missouri [accessed May 25, 2013].
“Workers complete the famous Gateway Arch in St. Louis, Missouri,” The History Channel website, http://www.history.com/this-day-in-history/workers-complete-the-famous-gateway-arch-in-st-louis-missouri (accessed May 25, 2013).
Workers complete the famous Gateway Arch in St. Louis, Missouri [Internet]. The History Channel website; 2013 [cited 2013 May 25] Available from: http://www.history.com/this-day-in-history/workers-complete-the-famous-gateway-arch-in-st-louis-missouri.
Workers complete the famous Gateway Arch in St. Louis, Missouri, http://www.history.com/this-day-in-history/workers-complete-the-famous-gateway-arch-in-st-louis-missouri (last visited May 25, 2013).
Workers complete the famous Gateway Arch in St. Louis, Missouri. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/workers-complete-the-famous-gateway-arch-in-st-louis-missouri. Accessed May 25, 2013.