Snedecor, G. W., & Cochran, W. G. (1956). Statistical methods: Applied to experiments in agriculture and biology (5a. ed.). The Iowa State University Press.
Lua i Stíl Chicago (17ú heag.)Snedecor, George Waddel, agus William Gemmell Cochran. Statistical Methods: Applied to Experiments in Agriculture and Biology. 5a. ed. Ames: The Iowa State University Press, 1956.
Lua MLA (9ú heag.)Snedecor, George Waddel, agus William Gemmell Cochran. Statistical Methods: Applied to Experiments in Agriculture and Biology. 5a. ed. The Iowa State University Press, 1956.
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