Pingyot, N., and C. Yodsuwan. “The Green Hotel Image Affecting Hotel Selection in Chiang Rai”. Journal of Management Science Chiangrai Rajabhat University, vol. 18, no. 2, Jan. 2024, pp. 173-02, https://so03.tci-thaijo.org/index.php/jmscrru/article/view/273142.