APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

Colman, David, and Trevor Young. Principles of Agricultural Economics: Markets and Prices in Less Developed Countries. first published 1989. Univ. Press, 1989.