Silviariza WY, Sumarmi, Utaya S, Bachri S, Handoyo B. Development of Evaluation Instruments to Measure the Quality of Spatial Problem Based Learning (SPBL): CIPP Framework. International Journal of Instruction [Internet]. 2023 Apr. 1 [cited 2024 Dec. 28];16(2):413-36. Available from: https://e-iji.net/ats/index.php/pub/article/view/149