Aisy NMR, Mulyono, Walid. Analysis of students difficulties in mathematics problem-solving ability on number pattern material. J. Pijar.MIPA [Internet]. 2022 Nov. 30 [cited 2024 Nov. 22];17(6):706-11. Available from: http://jurnalfkip.unram.ac.id/index.php/JPM/article/view/4149