Hill, P., & Vielvoye, R. (1974). Energy in Crisis ; a Guide to World Oil Supply and Demand and Alternative Resources. Yeatman.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHill, Peter, और Roger Vielvoye. Energy in Crisis ; a Guide to World Oil Supply and Demand and Alternative Resources. London: Yeatman, 1974.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHill, Peter, और Roger Vielvoye. Energy in Crisis ; a Guide to World Oil Supply and Demand and Alternative Resources. Yeatman, 1974.
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