Sankum, P., and N. Sanphoti. “Key success factors in solid waste management of the local government organization at Nakhon Phanom Province”. UBRU Journal for Public Health Research, vol. 11, no. 2, Dec. 2022, pp. 165-7, https://he02.tci-thaijo.org/index.php/ubruphjou/article/view/257942.