APA (7th ed.) Citation

Willcox, W. F. (1940). Studies in American demography. Cornell University Press.

Chicago Style (17th ed.) Citation

Willcox, Walter Francis. Studies in American Demography. Ithaca, N. Y: Cornell University Press, 1940.

MLA (9th ed.) Citation

Willcox, Walter Francis. Studies in American Demography. Cornell University Press, 1940.