Strahler, A. H., Strahler, A. N., & Strahler, A. N. (1997). Physical geography: Science and systems of the human environment. New York: Wiley.
Παραπομπή Chicago StyleStrahler, Alan H., Arthur Newell Strahler, and Arthur N. Strahler. Physical Geography: Science and Systems of the Human Environment. New York: Wiley, 1997.
Παραπομπή MLAStrahler, Alan H., Arthur Newell Strahler, and Arthur N. Strahler. Physical Geography: Science and Systems of the Human Environment. New York: Wiley, 1997.
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