Cita APA (7th ed.)

Cullingford, R. (1980). Timescales in geomorphology. John Wiley and Sons.

Cita Chicago (17th ed.)

Cullingford, R.A. Timescales in Geomorphology. New York: John Wiley and Sons, 1980.

Cita MLA (9th ed.)

Cullingford, R.A. Timescales in Geomorphology. John Wiley and Sons, 1980.