Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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