Hafsah binti Taha. (2009). The influence of student's understanding of the concept of mole, problem representation ability and mathematical ability on their performance in stoichiometry problem solving: A case study of Sekolah Menengah Kebangsaan Taman Melawati, Malaysia. Institue of Education, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hafsah binti Taha. The Influence of Student's Understanding of the Concept of Mole, Problem Representation Ability and Mathematical Ability on Their Performance in Stoichiometry Problem Solving: A Case Study of Sekolah Menengah Kebangsaan Taman Melawati, Malaysia. Kuala Lumpur: Institue of Education, International Islamic University Malaysia, 2009.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Hafsah binti Taha. The Influence of Student's Understanding of the Concept of Mole, Problem Representation Ability and Mathematical Ability on Their Performance in Stoichiometry Problem Solving: A Case Study of Sekolah Menengah Kebangsaan Taman Melawati, Malaysia. Institue of Education, International Islamic University Malaysia, 2009.