International Development Research Centre. (1986). International Development Research Centre projects, 1981-1985: Supplement to projects 1970-1981. International Development Research Centre.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Development Research Centre. International Development Research Centre Projects, 1981-1985: Supplement to Projects 1970-1981. Ottawa: International Development Research Centre, 1986.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)International Development Research Centre. International Development Research Centre Projects, 1981-1985: Supplement to Projects 1970-1981. International Development Research Centre, 1986.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.