Nguyễn Văn Tứ. (1992). English for forestry students. H: College of Forestry.
Chicago Style aipamenaNguyễn Văn Tứ. English for Forestry Students. H: College of Forestry, 1992.
MLA aipamenaNguyễn Văn Tứ. English for Forestry Students. H: College of Forestry, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.