Barbosa, Thaiis Aparecido Cansado, and Silvio Augusto Minciotti. “Customer Service: Insourcing or Outsourcing? An Analysis of Customer Satisfaction”. Review of Business Management 9, no. 25 (December 18, 2007): 81–95. Accessed May 3, 2024. https://rbgn.fecap.br/RBGN/article/view/148.