Girle, R. (2003). Possible worlds. Acumen.
Lua i Stíl Chicago (17ú heag.)Girle, Rod. Possible Worlds. Chesham [England]: Acumen, 2003.
Lua MLA (9ú heag.)Girle, Rod. Possible Worlds. Acumen, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.