FDR warns Japanese against using poison gas. (2013). The History Channel website. Retrieved 4:50, May 23, 2013, from http://www.history.com/this-day-in-history/fdr-warns-japanese-against-using-poison-gas.
FDR warns Japanese against using poison gas. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/fdr-warns-japanese-against-using-poison-gas [Accessed 23 May 2013].
“FDR warns Japanese against using poison gas.” 2013. The History Channel website. May 23 2013, 4:50 http://www.history.com/this-day-in-history/fdr-warns-japanese-against-using-poison-gas.
“FDR warns Japanese against using poison gas,” The History Channel website, 2013, http://www.history.com/this-day-in-history/fdr-warns-japanese-against-using-poison-gas [accessed May 23, 2013].
“FDR warns Japanese against using poison gas,” The History Channel website, http://www.history.com/this-day-in-history/fdr-warns-japanese-against-using-poison-gas (accessed May 23, 2013).
FDR warns Japanese against using poison gas [Internet]. The History Channel website; 2013 [cited 2013 May 23] Available from: http://www.history.com/this-day-in-history/fdr-warns-japanese-against-using-poison-gas.
FDR warns Japanese against using poison gas, http://www.history.com/this-day-in-history/fdr-warns-japanese-against-using-poison-gas (last visited May 23, 2013).
FDR warns Japanese against using poison gas. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/fdr-warns-japanese-against-using-poison-gas. Accessed May 23, 2013.