Chaiyuang, Kewalin, Natthida Thongviset, Panida Puekchaowna, and Nalinee Mohprasit. “Factors Affecting Consumers’ Purchase Decision of Collagen Supplements”. Journal of International Studies, Prince of Songkla University 13, no. 2 (December 6, 2023): 1–12. Accessed December 10, 2024. https://so03.tci-thaijo.org/index.php/jis/article/view/265079.