Loureiro, Sandra Maria Coreia, Eduardo Moraes Sarmento, e Constantin Witt-Dorring. Perceptions of the Teutonic Online Market and Opportunities for Adventure Travel Industry. Revista Turismo & Desenvolvimento 1, no. 27/28 (Janeiro 1, 2017): 1435-1445. Acedido Abril 15, 2024. https://proa.ua.pt/index.php/rtd/article/view/9995.