APA aipamena

Foley, G. (1981). The energy question. New York: Pengiun.

Chicago Style aipamena

Foley, Gerald. The Energy Question. New York: Pengiun, 1981.

MLA aipamena

Foley, Gerald. The Energy Question. New York: Pengiun, 1981.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.