APA aipamena

Staff, B. o. M. (1976). Mineral industries of Africa. Washington: The Bureau.

Chicago Style aipamena

Staff, Bureau of Mines. Mineral Industries of Africa. Washington: The Bureau, 1976.

MLA aipamena

Staff, Bureau of Mines. Mineral Industries of Africa. Washington: The Bureau, 1976.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.