Al-Hammadi, F. S., & Al-Taha, F. M. (1998). Common grammatical errors in the written production of second and fourth year female students majoring in English in the Department of foreign languages at King Faisal University: Comparison and contrast. King Faisal University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Al-Hammadi, Fayza Saleh, و Fayez M. Al-Taha. Common Grammatical Errors in the Written Production of Second and Fourth Year Female Students Majoring in English in the Department of Foreign Languages at King Faisal University: Comparison and Contrast. Ihsaa: King Faisal University, 1998.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Al-Hammadi, Fayza Saleh, و Fayez M. Al-Taha. Common Grammatical Errors in the Written Production of Second and Fourth Year Female Students Majoring in English in the Department of Foreign Languages at King Faisal University: Comparison and Contrast. King Faisal University, 1998.