(1990). Robert Ringel Collection. University of Notre Dame Archives.
Lua i Stíl Chicago (17ú heag.)Robert Ringel Collection. University of Notre Dame Archives, 1990.
Lua MLA (8ú heag.)Robert Ringel Collection. University of Notre Dame Archives, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.