Krumbein, W. C., & Graybill, F. A. (1965). An introduction to statistical models in geology. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Krumbein, William Christian, agus Franklin A. Graybill. An Introduction to Statistical Models in Geology. New York: McGraw-Hill, 1965.
Lua MLA (9ú heag.)Krumbein, William Christian, agus Franklin A. Graybill. An Introduction to Statistical Models in Geology. McGraw-Hill, 1965.
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