Zaid, M. A., & Baca, L. M. (1993). Comprehensive analysis of the current system of teaching English as a foreign language in the Saudi Arabian intermediate schools \. University of Colorado.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Zaid, Mohammed A., و Leonard M. Baca. Comprehensive Analysis of the Current System of Teaching English as a Foreign Language in the Saudi Arabian Intermediate Schools \. Colorad: University of Colorado, 1993.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Zaid, Mohammed A., و Leonard M. Baca. Comprehensive Analysis of the Current System of Teaching English as a Foreign Language in the Saudi Arabian Intermediate Schools \. University of Colorado, 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.