Sumner, G. L. (1949). The toastmaster' s guide: Secrets to success at the speakers' table. New York: Blue Ribbon Books.
Chicago Stili AlıntıSumner, G. Lynn. The Toastmaster' S Guide: Secrets to Success At the Speakers' Table. New York: Blue Ribbon Books, 1949.
MLA AlıntıSumner, G. Lynn. The Toastmaster' S Guide: Secrets to Success At the Speakers' Table. New York: Blue Ribbon Books, 1949.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..