MURFID, Nurjihan Aqilah; WIDANINGRUM, Sri; SAFRUDIN, Yunita Nugrahaini. Designing SOP for physical work environment maintenance based on ISO 14001: 2015 and Permenaker No.5 of 2018 at PT XYZ. Operations Excellence: Journal of Applied Industrial Engineering, Jakarta, Indonesia, v. 17, n. 2, p. 190–200, 2025. DOI: 10.22441/oe.2025.v17.i2.143. Disponível em: https://training-ojs3-publikasi.mercubuana.ac.id/index.php/oe/article/view/29612. Acesso em: 28 may. 2026.