Dewa Brata, R., D. Syarifuddin, D. Malik, and E. F. Anggraeny. “Implementation of the Port Guard Service to Minimize Negligence in the Loading and Unloading Process of PT Seram Jaya Lines”. JURNAL APLIKASI PELAYARAN DAN KEPELABUHANAN, vol. 14, no. 1, Sept. 2023, pp. 29-35, doi:10.30649/japk.v14i1.100.