GUMMESSON, Evert. Service Research Methodology: From Case Study Research to Case Theory. Revista Ibero-Americana de Estratégia, [S. l.], v. 13, n. 4, p. 08–17, 2014. DOI: 10.5585/ijsm.v13i4.2180. Disponível em: https://periodicos.uninove.br/riae/article/view/15468. Acesso em: 6 nov. 2024.