Cita APA (7a ed.)

Nowell-Smith, P. H., & Muñoz, J. (1967). Ethics ([1st pub.,6th repr.].). Penguin Books.

Cita Chicago Style (17a ed.)

Nowell-Smith, Patrick Horace, y Jacobo Muñoz. Ethics. [1st pub.,6th repr.]. Harmondsworth: Penguin Books, 1967.

Cita MLA (9a ed.)

Nowell-Smith, Patrick Horace, y Jacobo Muñoz. Ethics. [1st pub.,6th repr.]. Penguin Books, 1967.