SIAGIAN, Wilson. JASA TRANSPORTASI UDARA INDONESIA. Jurnal Sosial Humaniora, [S. l.], v. 2, n. 1, 2011. DOI: 10.30997/jsh.v2i1.85. Disponível em: http://103.127.96.46/index.php/JSH/article/view/85. Acesso em: 8 jun. 2026.