Aladwan, Saida Quftan Abdelaziz, et al. “The Level of Conceptual and Procedural Knowledge in Mathematics and Its Relationship to Creative Thinking Among Gifted Students”. International Journal of Instruction, vol. 16, no. 4, Oct. 2023, pp. 121-34, https://e-iji.net/ats/index.php/pub/article/view/10.