एपीए उद्धरण

Berry, R., & Roger Berry. (1993). Collins Cobuild English guides. London: HarperCollins.

शिकागो स्टाइल उद्धरण

Berry, Roger, और Roger Berry. Collins Cobuild English Guides. London: HarperCollins, 1993.

एमएलए उद्धरण

Berry, Roger, और Roger Berry. Collins Cobuild English Guides. London: HarperCollins, 1993.