APA aipamena

Gabler, R. E. (2007). Essentials of physical geography. Australia: Thomson Brooks/cole.

Chicago Style aipamena

Gabler, Robert E. Essentials of Physical Geography. Australia: Thomson Brooks/cole, 2007.

MLA aipamena

Gabler, Robert E. Essentials of Physical Geography. Australia: Thomson Brooks/cole, 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.