Sofyan, Ade. “ANALISIS PENERAPAN BUDAYA KERJA KAIZEN TERHADAP TINGKAT PRODUKTIVITAS KARYAWAN PT. SUPRAVISI RAMA OPTIK, Mfg”. Value : Journal of Management and Business 3, no. 1 (January 23, 2019). Accessed December 5, 2025. https://journal.unsika.ac.id/index.php/value/article/view/1538.