Werawat Punnitamai. (2013) An Investigation of the Causal Relationship between HR Competencies and Roles on Delivering Values to an Organization: A Case of Thai HR Practitioners. <i>NIDA Development Journal</i>, <i>53</i>(3), 105-123.Werawat Punnitamai. "An Investigation of the Causal Relationship between HR Competencies and Roles on Delivering Values to an Organization: A Case of Thai HR Practitioners". NIDA Development Journal 53 (2013):105-123.Werawat Punnitamai. An Investigation of the Causal Relationship between HR Competencies and Roles on Delivering Values to an Organization: A Case of Thai HR Practitioners. National Institute of Development Administration:ม.ป.ท. 2013.