What is the world socialist system?
MLA
Pirogov, G. G. What Is the World Socialist System?. Moscow: Progress Publishers, 1987
APA, 7th edition
Pirogov, G. G. (1987). What is the world socialist system?. Moscow: Progress Publishers
Chicago, 17th edition
Pirogov, G. G. What is the world socialist system?. Moscow: Progress Publishers, 1987