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_OJS [Internet]. 31 Tháng Tám 2026 [cited 23 Tháng Mười 2026];26(3E):2100. Available at: http://huitjournal.vn/index.php/huit-j-sci/article/view/620