APA aipamena

Boehm, R. G. (2002). Geography: The World and its people. New York: Glencoe/McGraw-Hill.

Chicago Style aipamena

Boehm, Ricchard G. Geography: The World and Its People. New York: Glencoe/McGraw-Hill, 2002.

MLA aipamena

Boehm, Ricchard G. Geography: The World and Its People. New York: Glencoe/McGraw-Hill, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.