Just, R. E. (1990). A model of U.S. corn, sorghum, and soybean markets and the role of government programs: USAGMKTS. Agriculture and Rural Development Department, World Bank.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Just, Richard E. A Model of U.S. Corn, Sorghum, and Soybean Markets and the Role of Government Programs: USAGMKTS. Washington, D.C: Agriculture and Rural Development Department, World Bank, 1990.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Just, Richard E. A Model of U.S. Corn, Sorghum, and Soybean Markets and the Role of Government Programs: USAGMKTS. Agriculture and Rural Development Department, World Bank, 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.