Nissara Jaisue. (2020) Guidelines on Promoting Pre-Retirement Preparation for Human Resources in an Organization. <i>Journal of Humanities and Social Sciences</i>, <i>39</i>(4), .31-42.Nissara Jaisue. "Guidelines on Promoting Pre-Retirement Preparation for Human Resources in an Organization". Journal of Humanities and Social Sciences 39 (2020):.31-42.Nissara Jaisue. Guidelines on Promoting Pre-Retirement Preparation for Human Resources in an Organization. mahasarakham university:ม.ป.ท. 2020.