SAFITRI, S.; KUSUMAWARDANI, D.; WIGUNA, C.; SUPRIYADI, D.; YULITA, I. MEASUREMENT OF VALIDITY AND RELIABILITY OF CUSTOMER SATISFACTION QUESTIONER in E-BOARDING APPICATIONS. Jurnal Pilar Nusa Mandiri, v. 16, n. 1, p. 1-6, 15 mar. 2020.