APA (7th ed.) Citation

Willett, A. H. (1951). The economic theory of risk and insurance. University of Pennsylvania Press.

Chicago Style (17th ed.) Citation

Willett, Allan H. The Economic Theory of Risk and Insurance. Philadelphia: University of Pennsylvania Press, 1951.

MLA (9th ed.) Citation

Willett, Allan H. The Economic Theory of Risk and Insurance. University of Pennsylvania Press, 1951.

Warning: These citations may not always be 100% accurate.