QUITOY, J. E. R.; GARCIA, D. A. C.; SUBADE, R. F.; ELURIAGA, L. M. T. Estimating tourism losses due to COVID-19 Pandemic: The case of Puerto Princesa underground river, Philippines. Davao Research Journal, [S. l.], v. 15, n. 2, p. 66–77, 2024. DOI: 10.59120/drj.v15iNo.2.189. Disponível em: https://davaoresearchjournal.ph/index.php/main/article/view/189. Acesso em: 26 jun. 2024.