Sustiyatik, Enni. “The Effect of Service Quality and Promotion on Customer Satisfaction”. JURNAL APLIKASI PELAYARAN DAN KEPELABUHANAN 10, no. 2 (March 1, 2020): 175–184. Accessed February 23, 2026. https://pdp-journal.hangtuah.ac.id/index.php/jurnal/article/view/19.