Emmika Prakongphan และ Donn Pjongluck. (2015) The effecting of decision making on purchasing cosmetics of female university students in Siam Square Bangkok Thailand. Stamford International University:ม.ป.ท.Emmika Prakongphan และ Donn Pjongluck. 2015. The effecting of decision making on purchasing cosmetics of female university students in Siam Square Bangkok Thailand. ม.ป.ท.:Stamford International University;Emmika Prakongphan และ Donn Pjongluck. The effecting of decision making on purchasing cosmetics of female university students in Siam Square Bangkok Thailand. ม.ป.ท.:Stamford International University, 2015. Print.