Cita APA

Trotsky, L. (1973). The Spanish revolution (1931-39). Pathfinder Press.

Citación estilo Chicago

Trotsky, Leon. The Spanish Revolution (1931-39). New York: Pathfinder Press, 1973.

Cita MLA

Trotsky, Leon. The Spanish Revolution (1931-39). Pathfinder Press, 1973.