Strahler, . A. N. (1965). Physical geography (3rd ed.). Wiley.
Chicago Style (17th ed.) ZitazioaStrahler, Arthur N. Physical Geography. 3rd ed. New York: Wiley, 1965.
MLA (9th ed.) ZitazioaStrahler, Arthur N. Physical Geography. 3rd ed. Wiley, 1965.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.