Gulo, Darianus, and Ganda Sirait. 2021. “STUDI KELAYAKAN PEMBUKAAN CABANG BARU BARBERSHOP TEXAS DI KOTA BATAM”. Computer and Science Industrial Engineering (COMASIE) 4 (5):1-10. https://ejournal.upbatam.ac.id/index.php/comasiejournal/article/view/3495.