MENINGKATKAN LOYALITAS PELANGGAN MELALUI LAYANAN DIGITAL: ANALISIS EXPECTATION CONFIRMATION MODEL PADA APLIKASI DELIVERY RESTORAN CEPAT SAJI DI MEDAN. JOURNAL OF SCIENCE AND SOCIAL RESEARCH, [S. l.], v. 9, n. 5, p. 7898 – 7906, 2026. DOI: 10.54314/jssr.v9i5.7015. Disponível em: https://jurnal.goretanpena.com/index.php/JSSR/article/view/7015.. Acesso em: 17 oct. 2026.