Nagel, E. (1961). The structure of science: Problems in the logic of scientific explanation. Hacourt, Brace & world.
Lua i Stíl Chicago (17ú heag.)Nagel, Ernest. The Structure of Science: Problems in the Logic of Scientific Explanation. New York: Hacourt, Brace & world, 1961.
Lua MLA (9ú heag.)Nagel, Ernest. The Structure of Science: Problems in the Logic of Scientific Explanation. Hacourt, Brace & world, 1961.
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