Khanijou และผู้แต่งคนอื่นๆ. (2016) Leadership styles and organizational performance: leading in the 21st century. National Institute of Development Administration:ม.ป.ท.Khanijou และผู้แต่งคนอื่นๆ. 2016. Leadership styles and organizational performance: leading in the 21st century. ม.ป.ท.:National Institute of Development Administration;Khanijou และผู้แต่งคนอื่นๆ. Leadership styles and organizational performance: leading in the 21st century. ม.ป.ท.:National Institute of Development Administration, 2016. Print.