Pintip Ruenwongsa และ Bhinyo Panijpan. (1995) Science and technology publication of state university in Thailand. Mahidol University:ม.ป.ท.Pintip Ruenwongsa และ Bhinyo Panijpan. 1995. Science and technology publication of state university in Thailand. ม.ป.ท.:Mahidol University;Pintip Ruenwongsa และ Bhinyo Panijpan. Science and technology publication of state university in Thailand. ม.ป.ท.:Mahidol University, 1995. Print.