Bridgwater, W. (1963). The colombia encyclopedia (3rd. ed.). Colombia University Press.
Chicago Style aipamenaBridgwater, William. The Colombia Encyclopedia. 3rd. ed. New York: Colombia University Press, 1963.
MLA aipamenaBridgwater, William. The Colombia Encyclopedia. 3rd. ed. Colombia University Press, 1963.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.