Douglas, W. O. (1950). Of men and mountains. New York: Happer and Brothers Publishers.
Chicago Stili AlıntıDouglas, William O. Of Men and Mountains. New York: Happer and Brothers Publishers, 1950.
MLA AlıntıDouglas, William O. Of Men and Mountains. New York: Happer and Brothers Publishers, 1950.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..