Withaya Chanchai และผู้แต่งคนอื่นๆ. (2015) Effects of participatory ergonomic intervention program to reduce occupational risks among hospital orderlies. Chulalongkorn University:ม.ป.ท.Withaya Chanchai และผู้แต่งคนอื่นๆ. 2015. Effects of participatory ergonomic intervention program to reduce occupational risks among hospital orderlies. ม.ป.ท.:Chulalongkorn University;Withaya Chanchai และผู้แต่งคนอื่นๆ. Effects of participatory ergonomic intervention program to reduce occupational risks among hospital orderlies. ม.ป.ท.:Chulalongkorn University, 2015. Print.