Haan, C. T. (1977). Statistical methods in hydrology. Iowa State University Press.
Lua i Stíl Chicago (17ú heag.)Haan, Charles Thomas. Statistical Methods in Hydrology. Ames: Iowa State University Press, 1977.
Lua MLA (9ú heag.)Haan, Charles Thomas. Statistical Methods in Hydrology. Iowa State University Press, 1977.
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