de Gois, Jenifer Naiara, and Angelita Moutin Segoria Gasparotto. “A STUDY ON SIX SIGMA METHODOLOGY”. Revista Interface Tecnológica 17, no. 2 (December 18, 2020): 743–754. Accessed January 29, 2026. https://revista.fatectq.edu.br/interfacetecnologica/article/view/969.