Salvado, Josefina Olívia Marques Godinho, Ana Maria Alves Pedro Ferreira, e Carlos Manuel Martins Costa. 2012. Travel Agencies: From Online Channel Conflict to Multi-Channel Harmony. Revista Turismo & Desenvolvimento 1 (17/18), 333-50. https://doi.org/10.34624/rtd.v1i17/18.12853.