Nola, R., & Sankey, H. (2007). Theories of scientific method: An introduction. Acumen.
Lua i Stíl Chicago (17ú heag.)Nola, Robert, agus Howard Sankey. Theories of Scientific Method: An Introduction. Stocksfield [England]: Acumen, 2007.
Lua MLA (9ú heag.)Nola, Robert, agus Howard Sankey. Theories of Scientific Method: An Introduction. Acumen, 2007.
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