A Léon Trotzky.

MLA

Martinet, Marcel, et al. A Léon Trotzky. Paris: Les Humbles, 1934.

APA

Martinet, M., Parijanine, M., Rolland, R., & Wullens, M. (1934). A Léon Trotzky. Paris: Les Humbles.

Chicago

Martinet, Marcel, Maurice Parijanine, Romain Rolland, and Maurice Wullens. A Léon Trotzky. Paris: Les Humbles, 1934.