APA (7th ed.) Zitazioa

.Parker, S. P. (1981). Encyclopedia of Energy (second edition.). McGraw-Hill.

Chicago Style (17th ed.) Zitazioa

.Parker, Sybil P. Encyclopedia of Energy. second edition. New York: McGraw-Hill, 1981.

MLA (9th ed.) Zitazioa

.Parker, Sybil P. Encyclopedia of Energy. second edition. McGraw-Hill, 1981.