Cita APA (7a ed.)

Ulmer, M. J. (1950). The economic theory of cost of living index numbers. Columbia University Press.

Cita Chicago Style (17a ed.)

Ulmer, Melville J. The Economic Theory of Cost of Living Index Numbers. New York: Columbia University Press, 1950.

Cita MLA (9a ed.)

Ulmer, Melville J. The Economic Theory of Cost of Living Index Numbers. Columbia University Press, 1950.