Al-Ahaydib, M., & Ridgway, R. (1986). Teaching English as a foreign language in the Intermediate and Secondary Schools of Saudi Arabia: Diagnostic Study. University of Kansas, Department of Philosophy.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Al-Ahaydib, Mohammed, و Robert Ridgway. Teaching English as a Foreign Language in the Intermediate and Secondary Schools of Saudi Arabia: Diagnostic Study. Kansas: University of Kansas, Department of Philosophy, 1986.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Al-Ahaydib, Mohammed, و Robert Ridgway. Teaching English as a Foreign Language in the Intermediate and Secondary Schools of Saudi Arabia: Diagnostic Study. University of Kansas, Department of Philosophy, 1986.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.