Stockwell, E. G. (1968). Population and people. Quadrangle Books.
Cita Chicago (17th ed.)Stockwell, Edward G. Population and People. Chicago: Quadrangle Books, 1968.
Cita MLA (9th ed.)Stockwell, Edward G. Population and People. Quadrangle Books, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.