Tengku Nor Rizan Tengku Mohamad Maasum. (2007). The effects of cooperative learning on English as a second language reading performance of low proficiency undergraduates at a public university. Fakulti Pendidikan, Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Tengku Nor Rizan Tengku Mohamad Maasum. The Effects of Cooperative Learning on English as a Second Language Reading Performance of Low Proficiency Undergraduates at a Public University. Bangi, Selangor: Fakulti Pendidikan, Universiti Kebangsaan Malaysia, 2007.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Tengku Nor Rizan Tengku Mohamad Maasum. The Effects of Cooperative Learning on English as a Second Language Reading Performance of Low Proficiency Undergraduates at a Public University. Fakulti Pendidikan, Universiti Kebangsaan Malaysia, 2007.