APA ציטוט

Petrovic, G. (1967). Marx in the mid- twentieth century. New York: Doubleday & Company, Inc.

Trích dẫn kiểu Chicago

Petrovic, Gajo. Marx in the Mid- Twentieth Century. New York: Doubleday & Company, Inc, 1967.

ציטוט MLA

Petrovic, Gajo. Marx in the Mid- Twentieth Century. New York: Doubleday & Company, Inc, 1967.