Cita APA (7a ed.)

Derfler, L. (1973). Socialism Since Marx: A century of the European Left. St. Martin's Press.

Cita Chicago Style (17a ed.)

Derfler, Leslie. Socialism Since Marx: A Century of the European Left. Nueva York: St. Martin's Press, 1973.

Cita MLA (8a ed.)

Derfler, Leslie. Socialism Since Marx: A Century of the European Left. St. Martin's Press, 1973.