Amat Tamsir, A. (2013). The significance of preschool education on the cognitive performance of young children: A case study of grade one primary school students in a rural area in Northern Sumatera, Indonesia. Institute of Education, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Amat Tamsir, Azizah. The Significance of Preschool Education on the Cognitive Performance of Young Children: A Case Study of Grade One Primary School Students in a Rural Area in Northern Sumatera, Indonesia. Kuala Lumpur: Institute of Education, International Islamic University Malaysia, 2013.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Amat Tamsir, Azizah. The Significance of Preschool Education on the Cognitive Performance of Young Children: A Case Study of Grade One Primary School Students in a Rural Area in Northern Sumatera, Indonesia. Institute of Education, International Islamic University Malaysia, 2013.