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توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Al-Awwad, G. A., & Ammar, W. (2009). Phonological development of 3 - to 4 - years - old Najdi children \. Al-Imam Mohammad Ibn Saud Islamic University, College of Langages and Translation, Department of english Language.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Al-Awwad, Ghada Abdulaziz, و Wafaa Ammar. Phonological Development of 3 - to 4 - Years - Old Najdi Children \. Riyadh: Al-Imam Mohammad Ibn Saud Islamic University, College of Langages and Translation, Department of english Language, 2009.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Al-Awwad, Ghada Abdulaziz, و Wafaa Ammar. Phonological Development of 3 - to 4 - Years - Old Najdi Children \. Al-Imam Mohammad Ibn Saud Islamic University, College of Langages and Translation, Department of english Language, 2009.