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.
MLA引文Kolakowski, Leszek. Toward a Marxist Humanism. New York: Grove Press, 1968.
警告：这些引文格式不一定是100％准确.