1.
Vebianti F, Sunardi S, Suwito A, Trapsilasiwi D, Oktavianingtyas E. Analysis of Geometry Problem Solving Based on APOS Theory for Class IX Students. JELMaR [Internet]. 20Jun.2022 [cited 4Dec.2024];3(1):33-1. Available from: https://jelmar.wisnuwardhana.ac.id/index.php/jelmar/article/view/69