Apichai Srimuang และ Kevin C.K.Lam. (2013) Key factor influencing purchasing decision on using the service of training program in Thailand. Stamford International University:ม.ป.ท.Apichai Srimuang และ Kevin C.K.Lam. 2013. Key factor influencing purchasing decision on using the service of training program in Thailand. ม.ป.ท.:Stamford International University;Apichai Srimuang และ Kevin C.K.Lam. Key factor influencing purchasing decision on using the service of training program in Thailand. ม.ป.ท.:Stamford International University, 2013. Print.