Al-harbi, A., & Ahmed, R. (2017). Effectiveness of Toastmasters in Enhancing Saudi Female Elementary-school Students' Speaking Proficiency: Advantages and Drawbacks. Al-Imam Muhammad Ibn Saud Islamic University,College of Languages and Translation, Department of English Language and Literature.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Al-harbi, Angaa, و Rafik Ahmed. Effectiveness of Toastmasters in Enhancing Saudi Female Elementary-school Students' Speaking Proficiency: Advantages and Drawbacks. Riyadh: Al-Imam Muhammad Ibn Saud Islamic University,College of Languages and Translation, Department of English Language and Literature, 2017.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Al-harbi, Angaa, و Rafik Ahmed. Effectiveness of Toastmasters in Enhancing Saudi Female Elementary-school Students' Speaking Proficiency: Advantages and Drawbacks. Al-Imam Muhammad Ibn Saud Islamic University,College of Languages and Translation, Department of English Language and Literature, 2017.