Woolfson, C. (1982). Labour theory of Culture: A re-examination of Engels's theory of human origins. Routledge and Kegan Paul.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWoolfson, Charles. Labour Theory of Culture: A Re-examination of Engels's Theory of Human Origins. Routledge and Kegan Paul, 1982.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWoolfson, Charles. Labour Theory of Culture: A Re-examination of Engels's Theory of Human Origins. Routledge and Kegan Paul, 1982.
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