Al-Odaibi, A. I., & Duncan, J. A. (1983). Analysis of educational competency and training needs of agricultural extension workers in the Eastern District of Saudi Arabia. University of Wisconsin.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Al-Odaibi, Abdullah Ibrahim, و James A. Duncan. Analysis of Educational Competency and Training Needs of Agricultural Extension Workers in the Eastern District of Saudi Arabia. Madison: University of Wisconsin, 1983.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Al-Odaibi, Abdullah Ibrahim, و James A. Duncan. Analysis of Educational Competency and Training Needs of Agricultural Extension Workers in the Eastern District of Saudi Arabia. University of Wisconsin, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.