Aswandi, Aswandi, et al. “The Effect of Extracurricular Activities and Learning Motivation on the Students’ Mathematics Learning Achievement”. Prisma Sains : Jurnal Pengkajian Ilmu Dan Pembelajaran Matematika Dan IPA IKIP Mataram, vol. 12, no. 1, Jan. 2024, pp. 98-109, doi:10.33394/j-ps.v12i1.10197.