Carthy, Martyn, and Richard Lynch. “A Correlational-Comparative Study of Grades 9, 10, 11 and 12 Students’ Motivation for Learning Biology and Their Biology Achievement at Pan-Asia International School, Thailand”. Scholar: Human Sciences 10, no. 2 (December 27, 2018): 280. Accessed July 12, 2024. http://www.assumptionjournal.au.edu/index.php/Scholar/article/view/2879.