APA aipamena

Schneierson, V. (1987). Frederick Engels: His life and work. Moscow: Progress Publishers.

Chicago Style aipamena

Schneierson, Vic. Frederick Engels: His Life and Work. Moscow: Progress Publishers, 1987.

MLA aipamena

Schneierson, Vic. Frederick Engels: His Life and Work. Moscow: Progress Publishers, 1987.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.