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.

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.

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