APA (7th ed.) Citation

Friedman, M., Cagan, P., Klein, J. J., Lerner, E. M., & Selden, R. T. (1956). Studies in the quantity theory of money. University of Chicago Press.

Chicago Style (17th ed.) Citation

Friedman, Milton, Phillip Cagan, John J. Klein, Eugene M. Lerner, and Richard T. Selden. Studies in the Quantity Theory of Money. Chicago: University of Chicago Press, 1956.

MLA (9th ed.) Citation

Friedman, Milton, et al. Studies in the Quantity Theory of Money. University of Chicago Press, 1956.