APA aipamena

Bernard W. Pipkin. (2005). Geology and the environment. Australia: Thomson.

Chicago Style aipamena

Bernard W. Pipkin. Geology and the Environment. Australia: Thomson, 2005.

MLA aipamena

Bernard W. Pipkin. Geology and the Environment. Australia: Thomson, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.