FDR becomes first president to travel by airplane on U.S. official business. (2013). The History Channel website. Retrieved 6:06, May 21, 2013, from http://www.history.com/this-day-in-history/fdr-becomes-first-president-to-travel-by-airplane-on-us-official-business.
FDR becomes first president to travel by airplane on U.S. official business. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/fdr-becomes-first-president-to-travel-by-airplane-on-us-official-business [Accessed 21 May 2013].
“FDR becomes first president to travel by airplane on U.S. official business.” 2013. The History Channel website. May 21 2013, 6:06 http://www.history.com/this-day-in-history/fdr-becomes-first-president-to-travel-by-airplane-on-us-official-business.
“FDR becomes first president to travel by airplane on U.S. official business,” The History Channel website, 2013, http://www.history.com/this-day-in-history/fdr-becomes-first-president-to-travel-by-airplane-on-us-official-business [accessed May 21, 2013].
“FDR becomes first president to travel by airplane on U.S. official business,” The History Channel website, http://www.history.com/this-day-in-history/fdr-becomes-first-president-to-travel-by-airplane-on-us-official-business (accessed May 21, 2013).
FDR becomes first president to travel by airplane on U.S. official business [Internet]. The History Channel website; 2013 [cited 2013 May 21] Available from: http://www.history.com/this-day-in-history/fdr-becomes-first-president-to-travel-by-airplane-on-us-official-business.
FDR becomes first president to travel by airplane on U.S. official business, http://www.history.com/this-day-in-history/fdr-becomes-first-president-to-travel-by-airplane-on-us-official-business (last visited May 21, 2013).
FDR becomes first president to travel by airplane on U.S. official business. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/fdr-becomes-first-president-to-travel-by-airplane-on-us-official-business. Accessed May 21, 2013.