INTERNAL MARKETING IN TRAVEL AND TOURISM COMPANIES AND ITS IMPACT ON ENHANCING MARKETING EFFICIENCY. American Journal of Interdisciplinary Research and Development, [S. l.], v. 13, p. 96–108, 2023. Disponível em: https://ajird.journalspark.org/index.php/ajird/article/view/520. Acesso em: 5 dec. 2025.