Cita APA (7a ed.)

Pollak, R. A., & Wales, T. J. (1992). Demand system specification and estimation. Oxford University Press.

Cita Chicago Style (17a ed.)

Pollak, Robert A., y Terence J. Wales. Demand System Specification and Estimation. New York: Oxford University Press, 1992.

Cita MLA (9a ed.)

Pollak, Robert A., y Terence J. Wales. Demand System Specification and Estimation. Oxford University Press, 1992.