Almeida, M. H., C. S. Ten Caten, and M. Gutterres. “Evaluating ISO 9001:2000 Certified and Non-Certified Organizations in Brazilian Leather-Footwear Chain”. Brazilian Journal of Operations & Production Management, vol. 6, no. 2, May 2010, pp. 51-73, https://bjopm.org.br/bjopm/article/view/V7N2A3.