Cita APA (7a ed.)

Howard, D., & Klare, K. E. (1972). The unknown dimension: European Marxism since Lenin. Basic Books.

Cita Chicago Style (17a ed.)

Howard, Dick, y Karl E. Klare. The Unknown Dimension: European Marxism Since Lenin. New York: Basic Books, 1972.

Cita MLA (8a ed.)

Howard, Dick, y Karl E. Klare. The Unknown Dimension: European Marxism Since Lenin. Basic Books, 1972.