APA (7th ed.) Citation

Trotski, L., Allen, N., & Saunders, G. (1981). The challenge of the left opposition (1928-29). New York: Pathfinder Press.

Chicago Style (17th ed.) Citation

Trotski, Leon, Naomi Allen, and George Saunders. The Challenge of the Left Opposition (1928-29). New York: Pathfinder Press, 1981.

MLA (8th ed.) Citation

Trotski, Leon, et al. The Challenge of the Left Opposition (1928-29). New York: Pathfinder Press, 1981.