1.
Nursyahidah F, Albab IU. Investigating student difficulties on integral calculus based on critical thinking aspects. J. ris. pendidik. mat [Internet]. 2017 Nov. 29 [cited 2025 May 10];4(2):211-8. Available from: https://journal.uny.ac.id/index.php/jrpm/article/view/15507