Doff, A. (1995). Trainer's handbook: Teach english. Univ. Pr.
Chicago Style (17th ed.) ZitazioaDoff, Adrian. Trainer's Handbook: Teach English. Cambridge: Univ. Pr, 1995.
MLA (9th ed.) ZitazioaDoff, Adrian. Trainer's Handbook: Teach English. Univ. Pr, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.