Martins, José de Sousa, e Arnaldo Fernandes Matos Coelho. 2015. “ARE THE FINANCIAL SERVICES’ CUSTOMERS TRULY LOYAL? AN INVESTIGATION IN THE PORTUGUESE PRIVATE BANKING SECTOR”. Revista Gestão Em Análise 4 (1). Fortaleza:89-109. https://doi.org/10.12662/2359-618xregea.v4i1.p89-109.2015.