JOHAN K. RUNTUK. Control Chart in the Service Industry: A Case Study in a University Health Clinic. International Journal of Science, Technology & Management, [S. l.], v. 1, n. 4, p. 436–441, 2020. DOI: 10.46729/ijstm.v1i4.89. Disponível em: https://ijstm.inarah.co.id/index.php/ijstm/article/view/89. Acesso em: 22 jan. 2026.