Sirapatsorn Wongthongdee. (2008) Human Resource Development Knowledge and Understanding and Its Relationship with the Internal Organizational Factors, Roles and Competencies: A Case of Thai Civil Service HRD Professionals. <i>Journal of Public and Private Management</i>, <i>15</i>(1), 109.Sirapatsorn Wongthongdee. "Human Resource Development Knowledge and Understanding and Its Relationship with the Internal Organizational Factors, Roles and Competencies: A Case of Thai Civil Service HRD Professionals". Journal of Public and Private Management 15 (2008):109.Sirapatsorn Wongthongdee. Human Resource Development Knowledge and Understanding and Its Relationship with the Internal Organizational Factors, Roles and Competencies: A Case of Thai Civil Service HRD Professionals. School of Public Administration, National Instituteof Development Administration (NIDA):ม.ป.ท. 2008.