Adun Mohara และ Paitoon Kraipornsak. (2005) Analysis of cost function of Thailand Food and Drug Administration. Chulalongkorn University:ม.ป.ท.Adun Mohara และ Paitoon Kraipornsak. 2005. Analysis of cost function of Thailand Food and Drug Administration. ม.ป.ท.:Chulalongkorn University;Adun Mohara และ Paitoon Kraipornsak. Analysis of cost function of Thailand Food and Drug Administration. ม.ป.ท.:Chulalongkorn University, 2005. Print.