Williamson, T. (1992). ON INTUITIONISTIC MODAL EPISTEMIC LOGIC.
Lua i Stíl Chicago (17ú heag.)Williamson, T. ON INTUITIONISTIC MODAL EPISTEMIC LOGIC. 1992.
Lua MLA (9ú heag.)Williamson, T. ON INTUITIONISTIC MODAL EPISTEMIC LOGIC. 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.