APA aipamena

Getis, A. (2008). Intruduction to Geography. McGraw Hill Companies Inc.

Chicago Style aipamena

Getis, Arthur. Intruduction to Geography. McGraw Hill Companies Inc, 2008.

MLA aipamena

Getis, Arthur. Intruduction to Geography. McGraw Hill Companies Inc, 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.