Factors that affect a student's English-speaking second year University.Government official in Bangkok (September 25 when 2558) http://www.ssruir.ssru.ac.th/bitstream/ssruir/329/1/054-53.pdf source.
Factors affecting the English-speaking students of the second year of University in Bangkok. (Find on September 25, 2558) Source http://www.ssruir.ssru.ac.th/bitstream/ssruir/329/1/054-53.pdf.
Factors affecting the oral English of university students a year 2 University in Bangkok. (find out when 25 September 2558) source http: / / www.ssruir.ssru.ac.th / bitstream / ssruir / 329 / 1 / 054-53.pdf .