APA (7th ed.) Citation

Peter, L. J., & Hull, R. (1969). The Peter principle: Why things always go wrong. William Morrow.

Chicago Style (17th ed.) Citation

Peter, Laurence J., and Raymond Hull. The Peter Principle: Why Things Always Go Wrong. New York: William Morrow, 1969.

MLA (9th ed.) Citation

Peter, Laurence J., and Raymond Hull. The Peter Principle: Why Things Always Go Wrong. William Morrow, 1969.