Snedecor, G. W. (1946). Statistical methods applied to experiments in agriculture and biology. With chapter 17 on sampling by William G. Cochran. Iowa State College Press.
Lua i Stíl Chicago (17ú heag.)Snedecor, George Waddel. Statistical Methods Applied to Experiments in Agriculture and Biology. With Chapter 17 on Sampling by William G. Cochran. Ames: Iowa State College Press, 1946.
Lua MLA (9ú heag.)Snedecor, George Waddel. Statistical Methods Applied to Experiments in Agriculture and Biology. With Chapter 17 on Sampling by William G. Cochran. Iowa State College Press, 1946.
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