APA aipamena

J.G Pounds Norman, & L.Cooper Edward. (1961). World Geography. New York: South-Western College Publishing.

Chicago Style aipamena

J.G Pounds Norman, và L.Cooper Edward. World Geography. New York: South-Western College Publishing, 1961.

MLA aipamena

J.G Pounds Norman, và L.Cooper Edward. World Geography. New York: South-Western College Publishing, 1961.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.