APA aipamena

ETHERTON, A. Contact 2: A secondary english course.-- rev. edition. Longman.

Chicago Style aipamena

ETHERTON, A.R.B. Contact 2: A Secondary English Course.-- Rev. Edition. London: Longman.

MLA aipamena

ETHERTON, A.R.B. Contact 2: A Secondary English Course.-- Rev. Edition. Longman.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.