APA aipamena

Douglas, W. O. (1950). Of men and mountains. New York: Happer and Brothers Publishers.

Chicago Style aipamena

Douglas, William O. Of Men and Mountains. New York: Happer and Brothers Publishers, 1950.

MLA aipamena

Douglas, William O. Of Men and Mountains. New York: Happer and Brothers Publishers, 1950.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.