Daniel, Farida, and Prida N. L. Taneo. “Development of Graph Theory Textbooks to Improve Students’ Mathematical Representation Ability in Discrete Mathematics Subjects”. Edumatica : Jurnal Pendidikan Matematika 9, no. 2 (November 18, 2019): 64-70. Accessed October 7, 2024. https://mail.online-journal.unja.ac.id/edumatica/article/view/7635.