Ali, Auwalu Rabiu, Azizah Endut, and Rahimah Embong. “Investigating the Environmental Awareness Level of Secondary School Students: Effects of Race, School Type, and Location”. Journal of Science and Technology 9, no. 4 (December 26, 2017). Accessed March 31, 2020. https://publisher.uthm.edu.my/ojs/index.php/JST/article/view/2055.