Nattawut Charumekin และ Udom Thumkosit. (2016) Factors affecting buyer-supplier collaboration in Thai public and private hospitals. National Institute of Development Administration:ม.ป.ท.Nattawut Charumekin และ Udom Thumkosit. 2016. Factors affecting buyer-supplier collaboration in Thai public and private hospitals. ม.ป.ท.:National Institute of Development Administration;Nattawut Charumekin และ Udom Thumkosit. Factors affecting buyer-supplier collaboration in Thai public and private hospitals. ม.ป.ท.:National Institute of Development Administration, 2016. Print.