Phage, Itumeleng. “Investigating First Year University Physics Students’ Ability to Integrate Algebraic and Kinematics Graphs”. International Journal of Physics & Chemistry Education 10, no. 1 (February 9, 2018): 1–15. Accessed May 22, 2022. https://www.ijpce.org/index.php/IJPCE/article/view/11.