Cita APA (7th ed.)

Gray, J. E. (1975). Energy policy: Industry perspectives. Ballinger Pub. Co.

Cita Chicago (17th ed.)

Gray, John E. Energy Policy: Industry Perspectives. Cambridge, Mass: Ballinger Pub. Co, 1975.

Cita MLA (9th ed.)

Gray, John E. Energy Policy: Industry Perspectives. Ballinger Pub. Co, 1975.