Auiwattanakul P, Sommart J. Factors Correlated with the Confidence toward Health Product Certification Marks of the Vocational Students in KhonKaen. ubruphjou [internet]. 2020 Jun. 30 [cited 2026 Oct. 11];9(1):153-61. available from: https://he02.tci-thaijo.org/index.php/ubruphjou/article/view/243324