Ismail, Mohd Erfy, Mohd Ali Samsudin, and Ahmad Nurulazam Md. Zain. 2014. “A Multilevel Study on Trends in Malaysian Secondary School Students’ Science Attitude: Evidence from TIMSS 2011”. International Journal of Asian Social Science 4 (5):572-84. https://archive.aessweb.com/index.php/5007/article/view/2658.