Cita APA (7th ed.)

Colman, D., & Young, T. (1989). Principles of agricultural economics: Markets and prices in less developed countries. Cambridge University Press.

Cita Chicago (17th ed.)

Colman, David, i Trevor Young. Principles of Agricultural Economics: Markets and Prices in Less Developed Countries. Cambridge: Cambridge University Press, 1989.

Cita MLA (9th ed.)

Colman, David, i Trevor Young. Principles of Agricultural Economics: Markets and Prices in Less Developed Countries. Cambridge University Press, 1989.