Marendra, I Gede. 2018. “UPAYA MIMINIMASI WASTE PADA LINI PROSES PRODUKSI KERTAS MEMO PUTAR MENGGUNAKAN VALUE STREAM MAPPING (VSM)”. Operations Excellence: Journal of Applied Industrial Engineering 10 (1). Jakarta, Indonesia:17-25. https://publikasi.mercubuana.ac.id/index.php/oe/article/view/3146.