Al-Essa, M. O., & Aspinwall, K. (1986). Formal and traditional education in Saudi Arabia: A comparative study of the goals and objectives of the primary level. Sheffield Hallam University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Al-Essa, Mohammed Omer, و Kath Aspinwall. Formal and Traditional Education in Saudi Arabia: A Comparative Study of the Goals and Objectives of the Primary Level. england: Sheffield Hallam University, 1986.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Al-Essa, Mohammed Omer, و Kath Aspinwall. Formal and Traditional Education in Saudi Arabia: A Comparative Study of the Goals and Objectives of the Primary Level. Sheffield Hallam University, 1986.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.