APA aipamena

Ian Breach & Michael Crawford. (1976). Earth in Danger: Pollution and conservation. Aldus books.

Chicago Style aipamena

Ian Breach and Michael Crawford. Earth in Danger: Pollution and Conservation. Aldus books, 1976.

MLA aipamena

Ian Breach and Michael Crawford. Earth in Danger: Pollution and Conservation. Aldus books, 1976.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.