Nonthakhot, P., A. . Wiboonpongse, and S. . Insisienmay. “Development of Sugarcane Contract Farming Practice in Luangnamtha Province, Laos”. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University, vol. 16, no. 2, Sept. 2022, pp. 579-92, doi:10.14456/psruhss.2022.43.