(2002). Interactions access: Listening/ speaking. [New York]: McGraw- Hill.
Chicago Style aipamenaInteractions Access: Listening/ Speaking. [New York]: McGraw- Hill, 2002.
MLA aipamenaInteractions Access: Listening/ Speaking. [New York]: McGraw- Hill, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.