Pongsiri Tejavibulya และ Somkiat Eiamkanchanalai. (2011) The impacts of opinion leaders towards purchase decision under different types of product involvement : a cross-cultural study. Chulalongkorn University:ม.ป.ท.Pongsiri Tejavibulya และ Somkiat Eiamkanchanalai. 2011. The impacts of opinion leaders towards purchase decision under different types of product involvement : a cross-cultural study. ม.ป.ท.:Chulalongkorn University;Pongsiri Tejavibulya และ Somkiat Eiamkanchanalai. The impacts of opinion leaders towards purchase decision under different types of product involvement : a cross-cultural study. ม.ป.ท.:Chulalongkorn University, 2011. Print.