Fophin, Theodore Dwivaland, Nurjanah, and Didi Suryadi. “Comparison of Vector Tasks in Indonesian and Singaporean Mathematics Textbooks”. EduMatSains : Jurnal Pendidikan, Matematika dan Sains 9, no. 1 (July 30, 2024): 121–132. Accessed March 14, 2025. http://ejournal.uki.ac.id/index.php/edumatsains/article/view/5965.