Kolakowski, L. (1968). Toward a Marxist humanism. New York: Grove Press.
Trích dẫn kiểu ChicagoKolakowski, Leszek. Toward a Marxist Humanism. New York: Grove Press, 1968.
Deismireacht MLAKolakowski, Leszek. Toward a Marxist Humanism. New York: Grove Press, 1968.
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