APA (7e ed.) Bronvermelding
Richards, J. C. (2002). Changes: English for international communication. Cambridge university press.
Chicago (17e ed.) Bronvermelding
Richards, Jack C. Changes: English for International Communication. Cambridge: Cambridge university press, 2002.
MLA (9e ed.) Bronvermelding
Richards, Jack C. Changes: English for International Communication. Cambridge university press, 2002.
Let op: Deze citaties zijn niet altijd 100% accuraat.