Abd Rahman, N., N. A. Razalee, R. Abd Samad Yahya, and O. Eng Tek. “The Development and Validation of Learning Attitudes about Physics (LAAP) Inventory”. Journal of Science and Mathematics Letters, vol. 3, no. 1, Jan. 2019, pp. 39-49, https://ejournal.upsi.edu.my/index.php/JSML/article/view/376.