QUALITY PRODUCTIVITY CIRCLE IN MANUFACTURE. Nigerian Journal of Technology, [S. l.], v. 15, n. 1, p. 16–19, 2022. DOI: 10.4314/njt.151.421. Disponível em: https://nijotech.com/index.php/nijotech/article/view/421. Acesso em: 16 apr. 2026.