APA (7th ed.) Zitazioa

CRAWLEY, G. M. (1975). Energy. Macmillan.

Chicago Style (17th ed.) Zitazioa

CRAWLEY, Gerard M. Energy. New York: Macmillan, 1975.

MLA (9th ed.) Zitazioa

CRAWLEY, Gerard M. Energy. Macmillan, 1975.