Franzel, S. (1979). An interim evaluation of two agricultural production projects in Senegal: The economics of rainfed and irrigated agriculture. Dept. of Agricultural Economics, Michigan State University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Franzel, Steven. An Interim Evaluation of Two Agricultural Production Projects in Senegal: The Economics of Rainfed and Irrigated Agriculture. East Lansing: Dept. of Agricultural Economics, Michigan State University, 1979.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Franzel, Steven. An Interim Evaluation of Two Agricultural Production Projects in Senegal: The Economics of Rainfed and Irrigated Agriculture. Dept. of Agricultural Economics, Michigan State University, 1979.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.