(1997). Further ahead: A business English video (video teacher's guide). Cambridge University Press.
Chicago Style aipamenaFurther Ahead: A Business English Video (video Teacher's Guide). Cambridge University Press, 1997.
MLA aipamenaFurther Ahead: A Business English Video (video Teacher's Guide). Cambridge University Press, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.