Angsikarn Sasithornwetchakul และ Therdchai Choibamroong. (2018) Tourism marketing management strategies for Nakhon Si Thammarat as a secondary tourism city toward foreign quality tourists. National Institute of Development Administration:ม.ป.ท.Angsikarn Sasithornwetchakul และ Therdchai Choibamroong. 2018. Tourism marketing management strategies for Nakhon Si Thammarat as a secondary tourism city toward foreign quality tourists. ม.ป.ท.:National Institute of Development Administration;Angsikarn Sasithornwetchakul และ Therdchai Choibamroong. Tourism marketing management strategies for Nakhon Si Thammarat as a secondary tourism city toward foreign quality tourists. ม.ป.ท.:National Institute of Development Administration, 2018. Print.