Kurniasih, Fransiska Novi, Wiwik Widayanti, and Tania Wicaksana. “Income Diversification Through Optimization of Service Rates at Universi-Tas Negeri Semarang”. International Journal of Multidisciplinary: Applied Business and Education Research 4, no. 11 (December 3, 2023): 4152–4159. Accessed January 24, 2026. https://ijmaberjournal.org/index.php/ijmaber/article/view/809.