Sari P, Wiyadi W, Soepatini S. The Influence Of Promotions And Service Quality On Customer Satisfaction At Assalaam Sukoharjo High School. IERJ [Internet]. 2024 Sep. 3 [cited 2025 Oct. 27];5(1):39-57. Available from: https://www.journal.ittishal.net/index.php/ierj/article/view/69