Idrees, W. M. A., & Owaidah, S. O. (1999). First language acquisition by Madina Saudi Arabia. King Abdul Aziz University,Faculty of Arts and Humanities, Department of European Languages and Literature.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Idrees, Wafa'a Mohammed Al-Tayyeb, و Sabri Omar Owaidah. First Language Acquisition by Madina Saudi Arabia. Riyadh: King Abdul Aziz University,Faculty of Arts and Humanities, Department of European Languages and Literature, 1999.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Idrees, Wafa'a Mohammed Al-Tayyeb, و Sabri Omar Owaidah. First Language Acquisition by Madina Saudi Arabia. King Abdul Aziz University,Faculty of Arts and Humanities, Department of European Languages and Literature, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.