Osolnick และผู้แต่งคนอื่นๆ. (2006) The Thai labour unions : identifying internal constraints to effective representation of members' interests in the workplace and in society. Chulalongkorn University:ม.ป.ท.Osolnick และผู้แต่งคนอื่นๆ. 2006. The Thai labour unions : identifying internal constraints to effective representation of members' interests in the workplace and in society. ม.ป.ท.:Chulalongkorn University;Osolnick และผู้แต่งคนอื่นๆ. The Thai labour unions : identifying internal constraints to effective representation of members' interests in the workplace and in society. ม.ป.ท.:Chulalongkorn University, 2006. Print.