APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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