McCarthy, M. (2006). Touchstone: Student's book. Cambridge, UK: Cambridge University Press.
Chicago Style aipamenaMcCarthy, Michael. Touchstone: Student's Book. Cambridge, UK: Cambridge University Press, 2006.
MLA aipamenaMcCarthy, Michael. Touchstone: Student's Book. Cambridge, UK: Cambridge University Press, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.