Anggorowati, Arum, et al. “Peran Lingkungan Persaingan Di Perusahaan Freight Forwarder”. Jurnal Manajemen Transportasi & Logistik (JMTRANSLOG), vol. 6, no. 3, Dec. 2019, pp. 231-8, doi:10.54324/j.mtl.v6i3.346.