Crichton, M. (1999). Timeline. Ballantine.
Lua i Stíl Chicago (17ú heag.)Crichton, Michael. Timeline. New York, NY: Ballantine, 1999.
Lua MLA (8ú heag.)Crichton, Michael. Timeline. Ballantine, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.