Dumrongsak Pekthong. (2000) Pharmacokinetics and the effects on psychomotor performance of caffeine in energy drinks in Thai healthy volunteers. Mahidol University,:ม.ป.ท.Dumrongsak Pekthong. 2000. Pharmacokinetics and the effects on psychomotor performance of caffeine in energy drinks in Thai healthy volunteers. ม.ป.ท.:Mahidol University,;Dumrongsak Pekthong. Pharmacokinetics and the effects on psychomotor performance of caffeine in energy drinks in Thai healthy volunteers. ม.ป.ท.:Mahidol University, 2000. Print.