"Allen, N. (1975). Leon Trotsky: The challenge of the left opposition 1923-25. Pathfinder press.
Chicago Style (17th ed.) Citation"Allen, Naomi.ed.". Leon Trotsky: The Challenge of the Left Opposition 1923-25. Pathfinder press, 1975.
MLA (9th ed.) Citation"Allen, Naomi.ed.". Leon Trotsky: The Challenge of the Left Opposition 1923-25. Pathfinder press, 1975.
Warning: These citations may not always be 100% accurate.