(1995). Fluency in English: An integrated course for advanced students. TP.HCM: Trẻ.
Chicago Style aipamenaFluency in English: An Integrated Course for Advanced Students. TP.HCM: Trẻ, 1995.
MLA aipamenaFluency in English: An Integrated Course for Advanced Students. TP.HCM: Trẻ, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.