League of Nations recognizes perpetual Swiss neutrality. (2013). The History Channel website. Retrieved 12:13, May 22, 2013, from http://www.history.com/this-day-in-history/league-of-nations-recognizes-perpetual-swiss-neutrality.
League of Nations recognizes perpetual Swiss neutrality. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/league-of-nations-recognizes-perpetual-swiss-neutrality [Accessed 22 May 2013].
“League of Nations recognizes perpetual Swiss neutrality.” 2013. The History Channel website. May 22 2013, 12:13 http://www.history.com/this-day-in-history/league-of-nations-recognizes-perpetual-swiss-neutrality.
“League of Nations recognizes perpetual Swiss neutrality,” The History Channel website, 2013, http://www.history.com/this-day-in-history/league-of-nations-recognizes-perpetual-swiss-neutrality [accessed May 22, 2013].
“League of Nations recognizes perpetual Swiss neutrality,” The History Channel website, http://www.history.com/this-day-in-history/league-of-nations-recognizes-perpetual-swiss-neutrality (accessed May 22, 2013).
League of Nations recognizes perpetual Swiss neutrality [Internet]. The History Channel website; 2013 [cited 2013 May 22] Available from: http://www.history.com/this-day-in-history/league-of-nations-recognizes-perpetual-swiss-neutrality.
League of Nations recognizes perpetual Swiss neutrality, http://www.history.com/this-day-in-history/league-of-nations-recognizes-perpetual-swiss-neutrality (last visited May 22, 2013).
League of Nations recognizes perpetual Swiss neutrality. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/league-of-nations-recognizes-perpetual-swiss-neutrality. Accessed May 22, 2013.