Hutchinson, T. (1996). American hotline: Progress-student book. Oxford: Oxford University Press.
Chicago Style aipamenaHutchinson, Tom. American Hotline: Progress-student Book. Oxford: Oxford University Press, 1996.
MLA aipamenaHutchinson, Tom. American Hotline: Progress-student Book. Oxford: Oxford University Press, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.