Engels, F. (1942). Origin of the family, private property and the state. International Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEngels, Frederick. Origin of the Family, Private Property and the State. International Publishers, 1942.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEngels, Frederick. Origin of the Family, Private Property and the State. International Publishers, 1942.
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