APA

Kołakowski L., . (1968). Toward a Marxist humanism. New York: Grove Press.

Chicago

Kołakowski Leszek, . 1968. Toward a Marxist humanism. New York: Grove Press.

Harvard

Kołakowski L., . (1968). Toward a Marxist humanism. New York: Grove Press.

MLA

Kołakowski Leszek, . Toward a Marxist humanism. New York: Grove Press. 1968.