KAUSHIK, C.; SHOKEEN, A.; KAUSHIK, P.; KHANDUJA, D. Six Sigma Application for Library Services. DESIDOC Journal of Library & Information Technology, [S. l.], v. 27, n. 5, p. 35–39, 2010. DOI: 10.14429/djlit.27.5.138. Disponível em: https://publications.drdo.gov.in/ojs/index.php/djlit/article/view/138. Acesso em: 27 jun. 2025.