APA (7th ed.) Zitazioa
Bierman, P. (2019). Key Concepts in Geomorphology (2nd Ed.). W. H. Freeman.
Chicago Style (17th ed.) Zitazioa
Bierman, Paul. Key Concepts in Geomorphology. 2nd Ed. New York: W. H. Freeman, 2019.
MLA (9th ed.) Zitazioa
Bierman, Paul. Key Concepts in Geomorphology. 2nd Ed. W. H. Freeman, 2019.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.