OLIMOVICH, R. S. Selling tours: the point where it is profitable for both tour operators and clients. Journal of Higher Education and Academic Advancement, [S. l.], v. 1, n. 4, p. 36–38, 2024. DOI: 10.61796/ejheaa.v1i4.472. Disponível em: https://journal.antispublisher.id/index.php/EJHEAA/article/view/472. Acesso em: 2 sep. 2025.