Ibrahim, M. E. H. (2012). Classroom Interaction in Second Language Teaching and Learning in the Vocational Education Development Centre (VEDC).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ibrahim, Mahmoud Elsayed Hamed. Classroom Interaction in Second Language Teaching and Learning in the Vocational Education Development Centre (VEDC). 2012.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Ibrahim, Mahmoud Elsayed Hamed. Classroom Interaction in Second Language Teaching and Learning in the Vocational Education Development Centre (VEDC). 2012.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.