Putri Anggita Berutu, Dwi Oktavia Teresa, Naftalia Napitupulu, and Delima Hutabarat, “ANALYSIS OF MONTHLY SHIPPING TURNOVER TARGET AT PT GLOBAL JET EXPRES MEDAN PERJUANGAN BRANCH, MEDAN ROUTE BASED ON OPERATIONAL COSTS”, IJSET, vol. 4, no. 7, pp. 1166–1170, Jun. 2025.