Buwono, Sri, and Jagad Aditya Dewantara. “Analisis Konten Sumber Ajar IPS Pada SMP Di Kota Pontianak”. Jurnal Basicedu 4, no. 3 (June 6, 2020): 740–753. Accessed July 3, 2024. https://jbasic.org/index.php/basicedu/article/view/432.