Kurniadi, Mochammad Danu, and Biyanto Biyanto. “ Strategy to Build Competitive Advantage of Islamic Higher Education at an University in Surabaya”. Academia Open 60 (June 30, 2022): 10.21070/acopen.6.2022.1814. Accessed June 15, 2024. https://acopen.umsida.ac.id/index.php/acopen/article/view/1814.