Handayani R, Purnamasari R, Sudarjat J. ANALISIS KESULITAN BELAJAR MATEMATIKA MELALUI PERKULIAHAN LEARNING MANAGEMENT SYSTEM. JPD [Internet]. 2021 Dec. 20 [cited 2024 Nov. 22];12(02):17-33. Available from: https://journal.unj.ac.id/unj/index.php/jpd/article/view/24355