Al-Essa, M. S., & Elewa, A. (2012). The effects of Language games on the acquisition of vocabulary in the Saudi male secondary schools. 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-Essa, Muadh S., و Abdelhamid Elewa. The Effects of Language Games on the Acquisition of Vocabulary in the Saudi Male Secondary Schools. Riyadh: Al-Imam Muhammad Ibn Saud Islamic University, College of Languages and Translation, Department of English Language and Literature, 2012.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Al-Essa, Muadh S., و Abdelhamid Elewa. The Effects of Language Games on the Acquisition of Vocabulary in the Saudi Male Secondary Schools. Al-Imam Muhammad Ibn Saud Islamic University, College of Languages and Translation, Department of English Language and Literature, 2012.