APA (7th ed.) Zitazioa

(1974). McGraw-Hill encyclopedia of environmental science. McGraw-Hill.

Chicago Style (17th ed.) Zitazioa

McGraw-Hill Encyclopedia of Environmental Science. New York: McGraw-Hill, 1974.

MLA (9th ed.) Zitazioa

McGraw-Hill Encyclopedia of Environmental Science. McGraw-Hill, 1974.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.