Ocy, Dwi Rismi, Wardani Rahayu, and Makmuri Makmuri. “Development of a HOTS-Based Mathematical Abstraction Ability Instrument in Trigonometry Using Riau Islands Province Culture”. Jurnal Gantang 8, no. 1 (June 30, 2023): 37–52. Accessed July 13, 2024. https://ojs.umrah.ac.id/index.php/gantang/article/view/5654.