Apriani A-N, Perdana Sari I, Salim A, . H, Wuryandani W. Developing an Assessment Instrument for Character Education Reinforcement (PPK) of Upper-class Students of Elementary School. KSS [Internet]. 2023May16 [cited 2024Dec.22];8(8):23–34. Available from: https://knepublishing.com/index.php/KnE-Social/article/view/13281