Fophin, T. D., Nurjanah, and D. Suryadi. “Comparison of Vector Tasks in Indonesian and Singaporean Mathematics Textbooks”. EduMatSains : Jurnal Pendidikan, Matematika Dan Sains, Vol. 9, no. 1, July 2024, pp. 121-32, doi:10.33541/edumatsains.v9i1.5965.