S. Nurfadlah, I. Rosmilawati, and I. S. Utami, “Development of a Flipbook-Assisted E-Module Integrating Problem-Based Learning to Enhance Students’ Conceptual Understanding”, j. kependidikan. has. penelit. kaji. kepustakaan. bid. pendidik. pengajaran. n.a., vol. 12, no. 2, pp. 875–886, Jun. 2026.