Hartmann, P. (2007). Interactions II: Reading. New York: McGraw-Hill.
Chicago Style aipamenaHartmann, Pamela. Interactions II: Reading. New York: McGraw-Hill, 2007.
MLA aipamenaHartmann, Pamela. Interactions II: Reading. New York: McGraw-Hill, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.