E. E. Lermatan, R. F. Jaya Sakti, A. Ghafar, S. Widiawati, S. Krisnawati, and O. S. Prakoso, “The Effect of Staff Competence, Customer Satisfaction, and Service Quality on Cargo Shipping Service User Loyalty”, SJTL, vol. 1, no. 2, pp. 91–100, Feb. 2024.