Dede, G. A. N., & Setiawan, D. (2020). Pengembangan Modul Berbasis Problem Based Learning (PBL) Materi Sistem Ekskresi Manusia. Prosiding Seminar Nasional IKIP Budi Utomo, 1(01), 294-299. https://doi.org/10.33503/prosiding.v1i01.919