1. Jake Courage. Accessed on 2008-04-12
  2. August, 2008, Halo Story Page. Frank O'Connor/Robert McLees interview. Accessed on 2008-04-12
  3. Halo: Evolutions - Essential Tales of the Halo Universe - The Impossible Life and the Possible Death of Preston J. Cole, page 454
  4. Halo: The Essential Visual Guide, page 8
Community content is available under CC-BY-SA unless otherwise noted.