Nunthika Kaewpunya และผู้แต่งคนอื่นๆ. (2011) Comparative study of the ratio of amphetamine to methamphetamine concentration in the urine samples of Thai patients receiving selegiline and methamphetamine abusers. Chulalongkorn University:ม.ป.ท.Nunthika Kaewpunya และผู้แต่งคนอื่นๆ. 2011. Comparative study of the ratio of amphetamine to methamphetamine concentration in the urine samples of Thai patients receiving selegiline and methamphetamine abusers. ม.ป.ท.:Chulalongkorn University;Nunthika Kaewpunya และผู้แต่งคนอื่นๆ. Comparative study of the ratio of amphetamine to methamphetamine concentration in the urine samples of Thai patients receiving selegiline and methamphetamine abusers. ม.ป.ท.:Chulalongkorn University, 2011. Print.