APA (7th ed.) Citation

Ahnert, F. (1998). Introduction to geomorphology (1. publ.). Arnold.

Chicago Style (17th ed.) Citation

Ahnert, Frank. Introduction to Geomorphology. 1. publ. London [u.a.]: Arnold, 1998.

MLA (9th ed.) Citation

Ahnert, Frank. Introduction to Geomorphology. 1. publ. Arnold, 1998.