APA (7th ed.) Citation

Ulmer, M. J. (1949). The economic theory of cost of living index numbers. Columbia University Press.

Chicago Style (17th ed.) Citation

Ulmer, Melville Jack. The Economic Theory of Cost of Living Index Numbers. New York: Columbia University Press, 1949.

MLA (9th ed.) Citation

Ulmer, Melville Jack. The Economic Theory of Cost of Living Index Numbers. Columbia University Press, 1949.