Kaufman, J., & Schuberth, c. C. J. (1987). Nós e o universo. Verbo.
Lua i Stíl Chicago (17ú heag.)Kaufman, Joe, agus cons. Christopher J. Schuberth. Nós E O Universo. Verbo, 1987.
Lua MLA (8ú heag.)Kaufman, Joe, agus cons. Christopher J. Schuberth. Nós E O Universo. Verbo, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.