Παραπομπή APA

Huberman, L. S. (1979). Introduction to socialism. Progressive Book Depot.

Παραπομπή Chicago Style

Huberman, Leo; Sweezy. Introduction to Socialism. New Delhi: Progressive Book Depot, 1979.

Παραπομπή MLA

Huberman, Leo; Sweezy. Introduction to Socialism. Progressive Book Depot, 1979.