Mustadi, Ali, Suhardi Suhardi, Endah Sri Susilaningrum, Rohmatul Ummah, Maylina Purwatiningtyas, and Prabantara Esti Wijayanti. “Character Based Reflective Picture Storybook: Improving Student’s Social Self-Concept in Elementary School”. Jurnal Cakrawala Pendidikan 36, no. 3 (October 28, 2017). Accessed May 12, 2025. https://journal.uny.ac.id/index.php/cp/article/view/15860.