Palin Hongbutr และ Montree Socatiyanurak. (2015) The impact of trade in telecommunications services liberalization in Asean to the competitiveness and the performance of the telecommunications companies in Thailand. National Institute of Development Administration:ม.ป.ท.Palin Hongbutr และ Montree Socatiyanurak. 2015. The impact of trade in telecommunications services liberalization in Asean to the competitiveness and the performance of the telecommunications companies in Thailand. ม.ป.ท.:National Institute of Development Administration;Palin Hongbutr และ Montree Socatiyanurak. The impact of trade in telecommunications services liberalization in Asean to the competitiveness and the performance of the telecommunications companies in Thailand. ม.ป.ท.:National Institute of Development Administration, 2015. Print.