Kusumaningrum, Betty, Muhammad Irfan, and Zainnur Wijayanto. “ERRORS ANALYSIS OF STUDENTS IN SOLVING VOLUME OF THE SOLID OF REVOLUTION PROBLEM IN TERM OF CRITICAL THINKING ASPECTS ”. Kalamatika: Jurnal Pendidikan Matematika 5, no. 2 (November 30, 2020): 119-132. Accessed April 22, 2021. http://kalamatika.matematika-uhamka.com/index.php/kmk/article/view/412.