Akinlua, A. A., & Opeola, S. M. (2014). Comparison of the Effectiveness of Programmed Instruction and Textbook Instruction in Learning Secondary School Mathematics. Obafemi Awolowo University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Akinlua, Akin Akinsola, و S. M. Opeola. Comparison of the Effectiveness of Programmed Instruction and Textbook Instruction in Learning Secondary School Mathematics. Obafemi Awolowo University, 2014.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Akinlua, Akin Akinsola, و S. M. Opeola. Comparison of the Effectiveness of Programmed Instruction and Textbook Instruction in Learning Secondary School Mathematics. Obafemi Awolowo University, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.