Bews, J. W. (1935). Human Ecology (1st. ed.). Oxford University Press.
Cita Chicago (17th ed.)Bews, John William. Human Ecology. 1st. ed. New york: Oxford University Press, 1935.
Cita MLA (9th ed.)Bews, John William. Human Ecology. 1st. ed. Oxford University Press, 1935.
Atenció: Aquestes cites poden no estar 100% correctes.