Alsahiel, A. A., & Al-shwairkh, S. (2008). Interlanguage refusal between South African native speakers of English and Saudi EFL learners. Al-Imam Mohammad Ibn Saud Islamic University, College of Languages and Translation, Department of english Language and Literature.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Alsahiel, Asmaa A., و Sami Al-shwairkh. Interlanguage Refusal Between South African Native Speakers of English and Saudi EFL Learners. Riyadh: Al-Imam Mohammad Ibn Saud Islamic University, College of Languages and Translation, Department of english Language and Literature, 2008.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Alsahiel, Asmaa A., و Sami Al-shwairkh. Interlanguage Refusal Between South African Native Speakers of English and Saudi EFL Learners. Al-Imam Mohammad Ibn Saud Islamic University, College of Languages and Translation, Department of english Language and Literature, 2008.