SEMBIRING, Andes Stefen. Pengembangan Bisnis Tour and Travel di Masa Pandemi COVID 19 ( Studi kasus : Pt. Milala Wisata). Jurnal Ilmiah Teknik Industri Prima (JURITI PRIMA) , [S. l.], v. 4, n. 2, 2021. DOI: 10.34012/juritiprima.v4i2.1732. Disponível em: https://jurnal.unprimdn.ac.id/index.php/juriti/article/view/1732. Acesso em: 19 oct. 2025.