Khairul Husna Abdul Kadir. (2006). The effect of a Question-Answer-Relationship (QAR) reading strategy on students' comprehension of science texts. Fakulti Pendidikan, Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Khairul Husna Abdul Kadir. The Effect of a Question-Answer-Relationship (QAR) Reading Strategy on Students' Comprehension of Science Texts. Bangi: Fakulti Pendidikan, Universiti Kebangsaan Malaysia, 2006.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Khairul Husna Abdul Kadir. The Effect of a Question-Answer-Relationship (QAR) Reading Strategy on Students' Comprehension of Science Texts. Fakulti Pendidikan, Universiti Kebangsaan Malaysia, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.