Kumruan, J. . . “A Study of the Operational Process According to the Quality Index of the Standard of Homestay Accommodation: A Case Study of Ban Amphawa Homestay, Amphawa District, Samut Songkhram Province”. Dusit Thani College Journal, vol. 14, no. 2, Aug. 2020, pp. 323-40, https://so01.tci-thaijo.org/index.php/journaldtc/article/view/243440.