Não informado. (1970). Annals of Mathematical Logic. Association for Symbolic Logic.
Lua i Stíl Chicago (17ú heag.)Não informado. Annals of Mathematical Logic. Amsterdam: Association for Symbolic Logic, 1970.
Lua MLA (8ú heag.)Não informado. Annals of Mathematical Logic. Association for Symbolic Logic, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.