Williamson, T., & Association, T. M. (1992). Inexact knowledge. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Williamson, T., agus The Mind Association. Inexact Knowledge. Oxford University Press, 1992.
Lua MLA (9ú heag.)Williamson, T., agus The Mind Association. Inexact Knowledge. Oxford University Press, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.