Williamson, T., & Trust, T. A. (2009). Summary of "The Philosophy of Philosophy". Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Williamson, T., agus The Analysis Trust. Summary of "The Philosophy of Philosophy". Oxford University Press, 2009.
Lua MLA (9ú heag.)Williamson, T., agus The Analysis Trust. Summary of "The Philosophy of Philosophy". Oxford University Press, 2009.
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