Jusrin Efendi Pohan, Mina Syanti Lubis, Yunisa Oktavia, Noni Febriana. Formative Assessment In Problem Solving Oriented Language Learning In High School. kuey [Internet]. 2023 Dec. 9 [cited 2025 Oct. 5];29(4):487-92. Available from: https://www.kuey.net/index.php/kuey/article/view/3336