Rifanti, Utti, & Herryawan Pujiharsono. " Pengaruh Model Pembelajaran Self Directed Learning terhadap Hasil Belajar Mahasiswa pada Mata Kuliah Matematika Diskrit." Journal of Medives : Journal of Mathematics Education IKIP Veteran Semarang [Online], 2.2 (2018): 245-251. Web. 16 Aug. 2025