Parnell, M. Marathon quest: Revised and updated.
Lua i Stíl Chicago (17ú heag.)Parnell, Martin. Marathon Quest: Revised and Updated.
Lua MLA (8ú heag.)Parnell, Martin. Marathon Quest: Revised and Updated.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.