ปภัสสรากาญจน์ ศ. “Community Needs Assessment for Capacity Development for Value-Added Ecotourism Enterprises in Nakhon Nayok Province”. Local Administration Journal, vol. 12, no. 2, June 2019, pp. 253-74, https://so04.tci-thaijo.org/index.php/colakkujournals/article/view/197694.