एपीए उद्धरण

Bradshaw, M. J., & Abbott, A. J. (1978). Earth's changing surface. Hodder and stoughton.

शिकागो स्टाइल उद्धरण

Bradshaw, Michael J., और A. J. Abbott. Earth's Changing Surface. London: Hodder and stoughton, 1978.

एमएलए उद्धरण

Bradshaw, Michael J., और A. J. Abbott. Earth's Changing Surface. Hodder and stoughton, 1978.