Maaruf, A. “Kaizen Cultural Analysis (Seiri, Seiton, Seiso, Seiketsu, Shitsuke) Against Employee Performance at PT. Smelting: Analisa Budaya Kaizen (Seiri, Seiton, Seiso, Seiketsu, Shitsuke) Terhadap Kinerja Karyawan Di PT. Smelting”. Proceedings of The ICECRS, vol. 9, Apr. 2021, doi:10.21070/icecrs2021897.