APA (7th ed.) Citation

Barkin, D., Batt, R. L., & De Walt, B. R. (1990). Food crops vs. feed crops: Global substitution of grains in production. Rienner.

Chicago Style (17th ed.) Citation

Barkin, David, Rosemary L. Batt, and Billie R. De Walt. Food Crops Vs. Feed Crops: Global Substitution of Grains in Production. Boulder u.a: Rienner, 1990.

MLA (9th ed.) Citation

Barkin, David, et al. Food Crops Vs. Feed Crops: Global Substitution of Grains in Production. Rienner, 1990.