APA aipamena

(1974). Environmentar geomorpholoy and landscape coservation. Stroudshurg.

Chicago Style aipamena

Environmentar Geomorpholoy and Landscape Coservation. Stroudshurg, 1974.

MLA aipamena

Environmentar Geomorpholoy and Landscape Coservation. Stroudshurg, 1974.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.