Não informado. (1990). Journal for General Philosophy of Science. Kluwer Academic Publishers.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal for General Philosophy of Science. Dordrecht, Holanda: Kluwer Academic Publishers, 1990.
Lua MLA (8ú heag.)Não informado. Journal for General Philosophy of Science. Kluwer Academic Publishers, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.