Rungratree Ungjarean ร. อ. and Chawalee Na Thalang ช. ณ. ถ. (2018) “Potential Factors of Eco-Tourism in Samutsakhon”, Dusit Thani College Journal, 11(1), pp. 133–148. available at: https://so01.tci-thaijo.org/index.php/journaldtc/article/view/135502 (accessed: 15 September 2026).