Richards, A. (1986). Development and modes of production in Marxian economics: A critical evaluation. Harwood Academic.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRichards, Alan. Development and Modes of Production in Marxian Economics: A Critical Evaluation. Chur: Harwood Academic, 1986.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRichards, Alan. Development and Modes of Production in Marxian Economics: A Critical Evaluation. Harwood Academic, 1986.
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