Kamolthip Yuennan. 2008. Foreign tourists' impressions toward visiting Thailand. Bangkok:Thammasat University; DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/TU.res.2008.27
Kamolthip Yuennan. (2008) Foreign tourists' impressions toward visiting Thailand (รายงานผลงานวิจัย). Thammasat University:Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/TU.res.2008.27
Kamolthip Yuennan. Foreign tourists' impressions toward visiting Thailand. Bangkok:Thammasat University, 2008. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/TU.res.2008.27
Kamolthip Yuennan. (2008) Foreign tourists' impressions toward visiting Thailand (รายงานผลงานวิจัย). Thammasat University:Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/TU.res.2008.27