Al-Sahlawi, A. A., & Costar, J. (1987). Role, skill, and knowledge perceptions of senior high school principals in Al-Hasa and eastern province school districts in the eastern region of Saudi Arabia. Michigan State University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Al-Sahlawi, Abdulla Abdulaziz, و James Costar. Role, Skill, and Knowledge Perceptions of Senior High School Principals in Al-Hasa and Eastern Province School Districts in the Eastern Region of Saudi Arabia. Michigan: Michigan State University, 1987.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Al-Sahlawi, Abdulla Abdulaziz, و James Costar. Role, Skill, and Knowledge Perceptions of Senior High School Principals in Al-Hasa and Eastern Province School Districts in the Eastern Region of Saudi Arabia. Michigan State University, 1987.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.