Cita APA (7th ed.)

TWIDALE, C. (1976). Analysis of landforms. John Wiley.

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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