Cita APA (7th ed.)

MCMULLAN, J. T. (1977). Energy resources, by John Trever. Edward Arnold.

Cita Chicago (17th ed.)

MCMULLAN, John Trevor. Energy Resources, by John Trever. London: Edward Arnold, 1977.

Cita MLA (9th ed.)

MCMULLAN, John Trevor. Energy Resources, by John Trever. Edward Arnold, 1977.

Atenció: Aquestes cites poden no estar 100% correctes.