“MENINGKATKAN LOYALITAS PELANGGAN MELALUI LAYANAN DIGITAL: ANALISIS EXPECTATION CONFIRMATION MODEL PADA APLIKASI DELIVERY RESTORAN CEPAT SAJI DI MEDAN”. JOURNAL OF SCIENCE AND SOCIAL RESEARCH, vol. 9, no. 5, Oct. 2026, pp. 7898 – 7906, https://doi.org/10.54314/jssr.v9i5.7015.