Yaemkong, Suphawadee, et al. “Factors Affecting Swamp Buffalo Production in Songkhram Wet Land, Nakhon Phanom Province, Thailand”. Buffalo Bulletin, vol. 38, no. 1, Mar. 2019, pp. 99-106, http://kuojs.lib.ku.ac.th/index.php/BufBu/article/view/2027.