APA (7th ed.) Citation

Sapsford, D., & Winters, L. A. (1990). Primary commodity prices: Economic models and policy. Cambridge University Press.

Chicago Style (17th ed.) Citation

Sapsford, David, and L. Alan Winters. Primary Commodity Prices: Economic Models and Policy. Cambridge: Cambridge University Press, 1990.

MLA (9th ed.) Citation

Sapsford, David, and L. Alan Winters. Primary Commodity Prices: Economic Models and Policy. Cambridge University Press, 1990.