Sasicha Suebsaeng และผู้แต่งคนอื่นๆ. (2001) Major factors affecting performance of frontline employees of Thai Airways International. National Institute of Development Administration:ม.ป.ท.Sasicha Suebsaeng และผู้แต่งคนอื่นๆ. 2001. Major factors affecting performance of frontline employees of Thai Airways International. ม.ป.ท.:National Institute of Development Administration;Sasicha Suebsaeng และผู้แต่งคนอื่นๆ. Major factors affecting performance of frontline employees of Thai Airways International. ม.ป.ท.:National Institute of Development Administration, 2001. Print.