Che Ahmad, Che Nidzam, Asmayati Yahaya, Mohd Faizal Nizam Lee Abdullah, Noraini Mohamed Noh, Mazlini Adnan, and Nurul Jannah Amri. 2014. “An Instrument to Assess Effect of the Physical Classroom Environment on Students”. Journal of Science and Mathematics Letters 2 (December):1-12. https://ejournal.upsi.edu.my/index.php/JSML/article/view/388.