ATO’ILLAH, M. Implementasi Lean Six Sigma Dalam Penentuan Prioritas Perbaikan Kualitas Pelayanan Padarumah Sakit Di Kabupaten Lumajang. Wiga : Jurnal Penelitian Ilmu Ekonomi, [S. l.], v. 7, n. 2, p. 97–107, 2018. DOI: 10.30741/wiga.v7i2.338. Disponível em: https://ejournal.itbwigalumajang.ac.id/index.php/wiga/article/view/338. Acesso em: 17 may. 2024.