PUTRI, D. E. .; ISTIANA, R. .; HERAWATI, D. .; ZAHWA, D. K. Development of a Problem-Based E-Module on the Immune System Material to Enhance Systemic Thinking Skills. Journal Of Biology Education Research (JBER), [S. l.], v. 6, n. 2, 2025. DOI: 10.55215/jber.v6i2.39. Disponível em: https://jber-fkip.unpak.ac.id/index.php/jber/article/view/39. Acesso em: 30 nov. 2025.