Hidayat, Noor Syamsu, et al. “The Effect of Service Quality and Delivery Timeliness on Customer Satisfaction Sicepat Express Penggilingan in 2023”. Jurnal Ekonomi Manajemen Sistem Informasi, vol. 6, no. 6, Aug. 2025, pp. 4663-70, doi:10.38035/jemsi.v6i6.8534.