©2013 National Research Council of Thailand
Sirigul Vorrawattanakijcharoen,Sirigukul Vorrawattanakijcharoen. 2007. A survey of learning problems in students of grade 10 English program (2006) at Sacred Heart Convent School. Bangkok:Thammasat University; DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/TU.the.2007.359
Sirigul Vorrawattanakijcharoen,Sirigukul Vorrawattanakijcharoen. (2007) A survey of learning problems in students of grade 10 English program (2006) at Sacred Heart Convent School (รายงานผลงานวิจัย). Thammasat University:Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/TU.the.2007.359
Sirigul Vorrawattanakijcharoen,Sirigukul Vorrawattanakijcharoen. A survey of learning problems in students of grade 10 English program (2006) at Sacred Heart Convent School. Bangkok:Thammasat University, 2007. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/TU.the.2007.359
Sirigul Vorrawattanakijcharoen,Sirigukul Vorrawattanakijcharoen. (2007) A survey of learning problems in students of grade 10 English program (2006) at Sacred Heart Convent School (รายงานผลงานวิจัย). Thammasat University:Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/TU.the.2007.359