William D. Thornbury. (2002). Principles of Geomorphology (2nd.). CBS.
Style de citation ChicagoWilliam D. Thornbury. Principles of Geomorphology. 2nd. NewDelhi: CBS, 2002.
Style de citation MLAWilliam D. Thornbury. Principles of Geomorphology. 2nd. CBS, 2002.
Attention : ces citations peuvent ne pas être correctes à 100%.