Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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