TIN DUC NGUYEN; LE PHUC HAI; NGUYEN LE THI NGOC CHAU. EXPLORING THE IMPLICIT IMPACT OF SUSTAINABILITY CERTIFICATIONS ON SERVICE QUALITY EXPECTATIONS: A NETNOGRAPHIC STUDY OF UPSCALE HOTELS IN HO CHI MINH CITY. HUIT Journal of Science, [S. l.], v. 26, n. 3E, p. 2100, 2026. DOI: 10.62985/j.huit_ojs.vol26.no3E.620. Disponível em: http://huitjournal.vn/index.php/huit-j-sci/article/view/620. Acesso em: 23 oct. 2026.