Barkin, D., Batt, R. L., & DeWalt, B. R. (1990). Food crops vs. feed crops : global substitution of grains in production / David Barkin, Rosemary L. Batt, Billie R. DeWalt: Global substitution of grains in production. Rienner.
Chicago Style (17th ed.) CitationBarkin, David, Rosemary L. Batt, and Billie R. DeWalt. Food Crops Vs. Feed Crops : Global Substitution of Grains in Production / David Barkin, Rosemary L. Batt, Billie R. DeWalt: Global Substitution of Grains in Production. London: Rienner, 1990.
MLA (9th ed.) CitationBarkin, David, et al. Food Crops Vs. Feed Crops : Global Substitution of Grains in Production / David Barkin, Rosemary L. Batt, Billie R. DeWalt: Global Substitution of Grains in Production. Rienner, 1990.
Warning: These citations may not always be 100% accurate.