Cepede, M. (1964). Population and food. Sheed and Ward.
Cita Chicago (17th ed.)Cepede, Michel. Population and Food. New York: Sheed and Ward, 1964.
Cita MLA (9th ed.)Cepede, Michel. Population and Food. Sheed and Ward, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.