Sumner, G. L. (1949). The toastmaster' s guide: Secrets to success at the speakers' table. New York: Blue Ribbon Books.
Chicago Style citaatSumner, G. Lynn. The Toastmaster' S Guide: Secrets to Success At the Speakers' Table. New York: Blue Ribbon Books, 1949.
MLA citatieSumner, G. Lynn. The Toastmaster' S Guide: Secrets to Success At the Speakers' Table. New York: Blue Ribbon Books, 1949.
Let op: Deze citaties zijn niet altijd 100% accuraat.