APA (7th ed.) Zitazioa
Strahler, A., & Strahler, A. Physical geography: Science and systems of the human environment.
Chicago Style (17th ed.) Zitazioa
Strahler, Alan, eta Arthur Strahler. Physical Geography: Science and Systems of the Human Environment.
MLA (9th ed.) Zitazioa
Strahler, Alan, eta Arthur Strahler. Physical Geography: Science and Systems of the Human Environment.
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