Kanchulee Punyain. 2008. A development of the constructivist thematic science program at Chiangmai zoo. Field of Study Science Education, Srinakharinwirot University; DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/SWU.the.2008.1
Kanchulee Punyain. (2008) A development of the constructivist thematic science program at Chiangmai zoo . Srinakharinwirot University/Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/SWU.the.2008.1
Kanchulee Punyain. A development of the constructivist thematic science program at Chiangmai zoo. . Bangkok:Srinakharinwirot University, 2008. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/SWU.the.2008.1
Kanchulee Punyain. (2008) A development of the constructivist thematic science program at Chiangmai zoo . Srinakharinwirot University/Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/SWU.the.2008.1