Citazione Stile APA (7a Edizione)

Gregory, K. J., & Goudie, A. S. (2011). The Sage Handbook of Geomorphology. SAGE Publications India Pvt Ltd.

Citazione stile Chigago Style (17a edizione)

Gregory, Kenneth J., e Andrew S. Goudie. The Sage Handbook of Geomorphology. New Delhi, India: SAGE Publications India Pvt Ltd, 2011.

Citatione MLA (9a ed.)

Gregory, Kenneth J., e Andrew S. Goudie. The Sage Handbook of Geomorphology. SAGE Publications India Pvt Ltd, 2011.