บุญยะศิรินันท์ ล. Variables Reduction for Creativity Tourism Approaches in Sustainable Ecotourism Business Development: A Case Study of Tourists in Thailand National Parks. CRMA Journal of Humanities and Social Sciences, Nakhon Nayok, Thailand, v. 5, p. 243–258, 2018. Disponível em: https://so01.tci-thaijo.org/index.php/CRMA_HUSO/article/view/154548. Acesso em: 7 oct. 2026.