Cita APA (7a ed.)

de León, D., & Petersen, A. (1931). Marxism vs. Anti=Marxism. Labor News Company.

Cita Chicago Style (17a ed.)

de León, Daniel, y Arnold Petersen. Marxism Vs. Anti=Marxism. New York: Labor News Company, 1931.

Cita MLA (8a ed.)

de León, Daniel, y Arnold Petersen. Marxism Vs. Anti=Marxism. Labor News Company, 1931.