“HOW PRIVATE HIGHER EDUCATION INSTITUTIONS IN INDONESIA CHANGED THEIR MARKETING MIX AMIDST THE COVID-19 PANDEMIC”, SJBEM, vol. 8, no. (3), pp. 94–99, Sep. 2021, Accessed: Jun. 25, 2026. [Online]. Available: https://singaporeanjbem.com/index.php/SJBEM/article/view/518