Prihartono, Budhi, Muhammad Azhar Ashari, and Aldila Rizkiana. “The Development of Customer Loyalty Model for Mobile Travel Agent Application”. Jurnal Teknik Industri 21, no. 1 (September 15, 2019): 1–11. Accessed July 4, 2024. https://ejournal.umm.ac.id/index.php/industri/article/view/7921.