Srijantr, T., P. Tangtongharuthai, C. Naritoom, K. Simsiriwong, P. Saridnirun, J. Janprasert, and G. Trebuil. “The Transformations of the Agrarian Systems in Kamphaengsaen Area of Nakhon Pathom Provice”. Kasetsart Journal of Social Sciences, vol. 11, no. 2, July 1990, pp. 151-62, https://so04.tci-thaijo.org/index.php/kjss/article/view/243983.