Durinda Puspasari, Durinta Puspasari, Ruri Nurul Aeni Wulandari, Lifa Farida Panduwinata, & Andy Parsetyo Wati. (2025). Development of a Case Study-Based Digital Book to Enhance Learning in Office Management Education. International Journal of Studies in International Education, 2(4), 108–116. https://doi.org/10.62951/ijsie.v2i4.436