Moch. Iswan Perangin-angin, Ambiyar, Indrati Kusumaningrum 2021. The Effectiveness of Project-Based Blended Learning Models in Cryptography Courses. Turkish Journal of Computer and Mathematics Education (TURCOMAT). 12, 14 (Sep. 2021), 3557–3568. DOI:https://doi.org/10.17762/turcomat.v12i14.10967.