Peter, D. L. (1969). The Peter Principle: Why Things always go Wrong. Penguin.
Cita Chicago Style (17a ed.)Peter, Dr. Laurence. The Peter Principle: Why Things Always Go Wrong. Penguin, 1969.
Cita MLA (9a ed.)Peter, Dr. Laurence. The Peter Principle: Why Things Always Go Wrong. Penguin, 1969.
Precaución: Estas citas no son 100% exactas.