Cita APA (7a ed.)

Piddington, R. A. (1956). The limits of mankind: A philosophy of population. J. Wright & Sons.

Cita Chicago Style (17a ed.)

Piddington, Robert Alfred. The Limits of Mankind: A Philosophy of Population. Bristol: J. Wright & Sons, 1956.

Cita MLA (8a ed.)

Piddington, Robert Alfred. The Limits of Mankind: A Philosophy of Population. J. Wright & Sons, 1956.