Heleni S, Armis A, Kartini K, Andriani S. Pembinaan Guru Pembimbing Olimpiade Sains Nasional Bidang Matematika SMA/MA Kecamatan Siak. jptam [Internet]. 2024 Oct. 25 [cited 2025 Jul. 13];8(3):44605-13. Available from: https://jptam.org/index.php/jptam/article/view/21171