APA aipamena

(1900). Vol. 25, № 1-6; American Geologist. 1900.

Chicago Style aipamena

Vol. 25, № 1-6; American Geologist. 1900, 1900.

MLA aipamena

Vol. 25, № 1-6; American Geologist. 1900, 1900.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.