Gustaniya, I. I., & Adamson, R. (1984). An analysis of the barriers to the learning process of senior high school students in the Makkah School District in Saudi Arabia. Pepperdine University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gustaniya, Issam Ibrahim, و Roy Adamson. An Analysis of the Barriers to the Learning Process of Senior High School Students in the Makkah School District in Saudi Arabia. California, United States of America: Pepperdine University, 1984.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Gustaniya, Issam Ibrahim, و Roy Adamson. An Analysis of the Barriers to the Learning Process of Senior High School Students in the Makkah School District in Saudi Arabia. Pepperdine University, 1984.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.