एपीए उद्धरण

Twidale, C. R. (1976). Analysis of landforms. John Wiley.

शिकागो स्टाइल उद्धरण

Twidale, C. R. Analysis of Landforms. Sydney: John Wiley, 1976.

एमएलए उद्धरण

Twidale, C. R. Analysis of Landforms. John Wiley, 1976.