Soepeno, Bambang, Rully Putri Nirmala Puji, Jefri Rieski Triyanto, and Guruh Prasetyo. 2023. “Managerial Skills Development of Buah Ketakasi Cooperative: Improvement of the Quality Management System”. International Journal of Multidisciplinary: Applied Business and Education Research 4 (1), 271-79. https://doi.org/10.11594/ijmaber.04.01.25.