Hill, P., & Vielvoye, R. (1974). Brandts' energy in crisis: A guide to world oil supply and demand and alternative resources. Robert Yeatman Ltd.
Cita Chicago (17th ed.)Hill, Peter, i Roger Vielvoye. Brandts' Energy in Crisis: A Guide to World Oil Supply and Demand and Alternative Resources. London: Robert Yeatman Ltd, 1974.
Cita MLA (9th ed.)Hill, Peter, i Roger Vielvoye. Brandts' Energy in Crisis: A Guide to World Oil Supply and Demand and Alternative Resources. Robert Yeatman Ltd, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.