APA aipamena

Foley, G. (1976). The energy question. London: Penguin Books.

Chicago Style aipamena

Foley, Gerald. The Energy Question. London: Penguin Books, 1976.

MLA aipamena

Foley, Gerald. The Energy Question. London: Penguin Books, 1976.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.