Paitoon Yotepume. (2000) Quality system audit database. Mahidol University,:ม.ป.ท.Paitoon Yotepume. 2000. Quality system audit database. ม.ป.ท.:Mahidol University,;Paitoon Yotepume. Quality system audit database. ม.ป.ท.:Mahidol University, 2000. Print.