Al-Aqil, H. I., & Gomaa, Y. (2015). Heading devices in linguistics thesis abstracts. Al-Imam Mohammed Bin Saud Islamic University,College Languages and Translation, Department of English Language and Literature.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Al-Aqil, Hossam Ibrahim, و Yasser Gomaa. Heading Devices in Linguistics Thesis Abstracts. Riyadh: Al-Imam Mohammed Bin Saud Islamic University,College Languages and Translation, Department of English Language and Literature, 2015.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Al-Aqil, Hossam Ibrahim, و Yasser Gomaa. Heading Devices in Linguistics Thesis Abstracts. Al-Imam Mohammed Bin Saud Islamic University,College Languages and Translation, Department of English Language and Literature, 2015.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.