Aniruth Manothum และ Jittra Rukijkanpanich. (2009) The development of occupational health and safety management model for the informal-sector workers using a participatory approach. Chulalongkorn University:ม.ป.ท.Aniruth Manothum และ Jittra Rukijkanpanich. 2009. The development of occupational health and safety management model for the informal-sector workers using a participatory approach. ม.ป.ท.:Chulalongkorn University;Aniruth Manothum และ Jittra Rukijkanpanich. The development of occupational health and safety management model for the informal-sector workers using a participatory approach. ม.ป.ท.:Chulalongkorn University, 2009. Print.