APA (7th ed.) Citation

Trotsky, L., Breitman, G., & Saunders, G. (1977). Portraits, political & personal. Pathfinder Press.

Chicago Style (17th ed.) Citation

Trotsky, Leon, George Breitman, and George Saunders. Portraits, Political & Personal. New York: Pathfinder Press, 1977.

MLA (9th ed.) Citation

Trotsky, Leon, et al. Portraits, Political & Personal. Pathfinder Press, 1977.