Li Yibo. 2012. Effects of problem-based english writing instruction on critical thinking abilities and argumentative writing skills of thai upper secondary school students. , Chulalongkorn University; DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/CU.the.2012.173
Li Yibo. (2012) Effects of problem-based english writing instruction on critical thinking abilities and argumentative writing skills of thai upper secondary school students . Chulalongkorn University/Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/CU.the.2012.173
Li Yibo. Effects of problem-based english writing instruction on critical thinking abilities and argumentative writing skills of thai upper secondary school students. . Bangkok:Chulalongkorn University, 2012. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/CU.the.2012.173
Li Yibo. (2012) Effects of problem-based english writing instruction on critical thinking abilities and argumentative writing skills of thai upper secondary school students . Chulalongkorn University/Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/CU.the.2012.173