Getis, A. (2008). Intruduction to Geography. McGraw Hill Companies Inc.
Chicago Style aipamenaGetis, Arthur. Intruduction to Geography. McGraw Hill Companies Inc, 2008.
MLA aipamenaGetis, Arthur. Intruduction to Geography. McGraw Hill Companies Inc, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.