Warsito, Tito, and Riki Alfandra. “ANALISIS PROGRAM EVALUATION REVIEW TECHNIQUE (PERT) DALAM PROSES CREATE INVOICE IMPORT OCEAN”. Jurnal Manajemen Bisnis Transportasi Dan Logistik, vol. 2, no. 1, Sept. 2015, pp. 44-63, doi:10.54324/j.mbtl.v2i1.956.