Cita APA (7a ed.)

Hill, P., & Vielvoye, R. (1974). Energy in Crisis ; a Guide to World Oil Supply and Demand and Alternative Resources. Yeatman.

Cita Chicago Style (17a ed.)

Hill, Peter, y Roger Vielvoye. Energy in Crisis ; a Guide to World Oil Supply and Demand and Alternative Resources. London: Yeatman, 1974.

Cita MLA (8a ed.)

Hill, Peter, y Roger Vielvoye. Energy in Crisis ; a Guide to World Oil Supply and Demand and Alternative Resources. Yeatman, 1974.