Tham khảo Warren B. Smith

  1. ↑ Warren B. Smith Papers, University of Iowa Libraries
  2. ↑ James Jones in Illinois a Guide to the Handy Writers Colony Collection in the Sagamon State University Library Archives.
  3. ↑ Bigfoot Casebook Updated, Sightings and Encounters from 1818 to 2004, by Janet & Colin Bord, foreword by Loren Coleman
  4. ↑ Alec Maclellan, The lost world of Agharti: the mystery of Vril power, Souvenir Press, 1982
  5. ↑ Jerome Clark, Extraordinary encounters: an encyclopedia of extraterrestrials and otherworldly beings, ABC-CLIO, 2000
  6. ↑ Warren Billy Smith: UFO Investigator or Hoaxster?
  7. ↑ Kevin Randle's Blogspot