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.