Παραπομπή APA

Kelle,V, & Kovalson,M. (1973). Historical materialism: Outline of Marxist theory of society. Progress.

Παραπομπή Chicago Style

Kelle,V, και Kovalson,M. Historical Materialism: Outline of Marxist Theory of Society. Moscow: Progress, 1973.

Παραπομπή MLA

Kelle,V, και Kovalson,M. Historical Materialism: Outline of Marxist Theory of Society. Progress, 1973.