Não informado. (1990). Modern Logic. Modern Logic Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. Modern Logic. Ames, Iowa: Modern Logic Publishing, 1990.
Lua MLA (8ú heag.)Não informado. Modern Logic. Modern Logic Publishing, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.