APA aipamena

Foundation for Environmental Conservation. (1974). Environmental conservation. Elsevier Sequoia.

Chicago Style aipamena

Foundation for Environmental Conservation. Environmental Conservation. Lausanne: Elsevier Sequoia, 1974.

MLA aipamena

Foundation for Environmental Conservation. Environmental Conservation. Elsevier Sequoia, 1974.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.