Nathathida Kovitcharoenkul และ Saravudh Anantachart. (2014) Reference Group Influences on Consumer's Product and Brand Decisions. Chulalongkorn University:ม.ป.ท.Nathathida Kovitcharoenkul และ Saravudh Anantachart. 2014. Reference Group Influences on Consumer's Product and Brand Decisions. ม.ป.ท.:Chulalongkorn University;Nathathida Kovitcharoenkul และ Saravudh Anantachart. Reference Group Influences on Consumer's Product and Brand Decisions. ม.ป.ท.:Chulalongkorn University, 2014. Print.