Sathaporn Chooin และ Prachoup Kwanman. (2024) The Happy Workplace Organizational Culture Development Model of Primary Education Service Area Offices in The Northern Region. <i>Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University</i>, <i>18</i>(2), 875-893.Sathaporn Chooin และ Prachoup Kwanman. "The Happy Workplace Organizational Culture Development Model of Primary Education Service Area Offices in The Northern Region". Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University 18 (2024):875-893.Sathaporn Chooin และ Prachoup Kwanman. The Happy Workplace Organizational Culture Development Model of Primary Education Service Area Offices in The Northern Region. Pibulsongkram Rajabhat University:ม.ป.ท. 2024.