Cita APA (7a ed.)

Dumas, A., & Coward, D. (1993). Twenty years after. Oxford University Press.

Cita Chicago Style (17a ed.)

Dumas, Alexandre, y David Coward. Twenty Years After. Oxford: Oxford University Press, 1993.

Cita MLA (9a ed.)

Dumas, Alexandre, y David Coward. Twenty Years After. Oxford University Press, 1993.