McCarthy, M. (2005). Touchstone: Level 1. New York, N.Y: Cambridge University Press.
Chicago Style aipamenaMcCarthy, Michael. Touchstone: Level 1. New York, N.Y: Cambridge University Press, 2005.
MLA aipamenaMcCarthy, Michael. Touchstone: Level 1. New York, N.Y: Cambridge University Press, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.