APA (7th ed.) Zitazioa

(1994). Map adventures / U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Zitazioa

Map Adventures / U.S. Department of the Interior, U.S. Geological Survey. 1994.

MLA (9th ed.) Zitazioa

Map Adventures / U.S. Department of the Interior, U.S. Geological Survey. 1994.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.