MEASUREMENT OF VALIDITY AND RELIABILITY OF CUSTOMER SATISFACTION QUESTIONER in E-BOARDING APPICATIONS. pilar [Internet]. 2020 Mar. 15 [cited 2026 Apr. 3];16(1):1-6. Available from: https://ejournal.nusamandiri.ac.id/https:/ejournal.nusamandiri.ac.id/index.php/pilar/article/view/1069