Al-Harbi, M. G., & Ahmed, R. (2012). Using Games to Improve Saudi EFL Students' Learning of Vocabulary. Imam Mohammad ibn Saud Islamic University, College of Languages and Translation, Department of English Language and Literature.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Al-Harbi, Madhawi Ghallab, و Rafik Ahmed. Using Games to Improve Saudi EFL Students' Learning of Vocabulary. Riyadh: Imam Mohammad ibn Saud Islamic University, College of Languages and Translation, Department of English Language and Literature, 2012.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Al-Harbi, Madhawi Ghallab, و Rafik Ahmed. Using Games to Improve Saudi EFL Students' Learning of Vocabulary. Imam Mohammad ibn Saud Islamic University, College of Languages and Translation, Department of English Language and Literature, 2012.