L. Safitri, N. Hidayati, and S. Suryanti, “Integrating Problem-Based Learning into E-Modules : A Development Study with Validation and Student Response Analysis”, j. kependidikan. has. penelit. kaji. kepustakaan. bid. pendidik. pengajaran. n.a., vol. 11, no. 1, pp. 397–409, Mar. 2025.