Verspoor, A. (1991). Lending for learning: Twenty years of World Bank support for basic education. Population and Human Resources Department, World Bank.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Verspoor, Adriaan. Lending for Learning: Twenty Years of World Bank Support for Basic Education. Washington, D.C: Population and Human Resources Department, World Bank, 1991.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Verspoor, Adriaan. Lending for Learning: Twenty Years of World Bank Support for Basic Education. Population and Human Resources Department, World Bank, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.