Não informado. (1990). Journal of Logic and Computation. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of Logic and Computation. Oxford, Inglaterra: Oxford University Press, 1990.
Lua MLA (8ú heag.)Não informado. Journal of Logic and Computation. Oxford University Press, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.