Παραπομπή APA

Summerfield, M. A. (1991). Global geomorphology: An introduction to the study of landforms. Harlow, Essex: Longman.

Παραπομπή Chicago Style

Summerfield, Michael A. Global Geomorphology: An Introduction to the Study of Landforms. Harlow, Essex: Longman, 1991.

Παραπομπή MLA

Summerfield, Michael A. Global Geomorphology: An Introduction to the Study of Landforms. Harlow, Essex: Longman, 1991.

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