B. Na Thongkaew, A. Ruksapol, K. Monpipath, S. Buaurai, W. Tokeree, and P. Morasilp, “Food Security for Community-Based Tourism of Koh Phithak Lang Suan District, Chumphon Province”, soc sci hum utcc, vol. 38, no. 2, pp. 50–64, Nov. 2018.