Tham khảo Dự án Blue Book

  1. "UNIDENTIFIED FLYING OBJECTS AND AIR FORCE PROJECT BLUE BOOK" URL accessed February 21, 2010
  2. “National Reconnaissance Office Review and Redaction Guide: Appendix C - Glossary of Code Words and Terms” (PDF). National Reconnaissance Office. 2008. [liên kết hỏng]
  3. Dr. Michael D. Swords; "UFOs, the Military, and the Early Cold War Era", pages 82-121 in "UFOs and Abductions: Challenging the Borders of Knowledge" David M. Jacobs, editor; 2000, University Press of Kansas, ISBN 0-7006-1032-4; p103.
  4. see Clark, 1998
  5. Dr. Michael D. Swords; "UFOs, the Military, and the Early Cold War Era", p102
  6. https://web.archive.org/web/20061209172010/http://www.nicap.dabsol.co.uk/51-69.htm
  7. 1 2 3 Blum, Howard, Out There: The Government's Secret Quest for Extraterrestrials, Simon and Schuster, 1990
  8. Jacques Vallee, Passport to Magonia: On UFOs, Folklore and Parallel Worlds (1969)
  9. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Jerome Clark, The UFO Book: Encyclopedia of the Extraterrestrial, 1998; Detroit: Visible Ink Press, ISBN 1-57859-029-9
  10. 1 2 3 4 Leslie Kean, UFO – Vật thể bay không xác định: Những tiết lộ mới nhất về UFO từ các phi công, người dân, và các cơ quan chính phủ, Lê Khánh Toàn dịch, Nhà xuất bản Thế giới, 2013, tr. 172–174
  11. 1 2 3 Jerome Clark, The UFO Book: Encyclopedia of the Extraterrestrial, p468
  12. Jerome Clark, The UFO Book: Encyclopedia of the Extraterrestrial, p592
  13. 1 2 Ann Druffel; Firestorm: Dr. James E. McDonald's Fight for UFO Science; 2003, Wild Flower Press; ISBN 0-926524-58-5, p63
  14. Jerome Clark, The UFO Book: Encyclopedia of the Extraterrestrial, p477
  15. Jerome Clark, The UFO Book: Encyclopedia of the Extraterrestrial, 1998; Detroit: Visible Ink Press, p478–479; emphasis as in original
  16. http://www.nidsci.org/pdf/quintanilla.pdf Lưu trữ 2016-03-05 tại Wayback Machine. | Quintanilla, H. (1974). UFOs, An Air Force Dilemma.
  17. "Unidentified Flying Objects." (No. 55) Electronic Record. Hearing Committee of Armed Services of the House of Representatives. 89th Congress, Second Session. 5 April 1966. (50-066 O) U.S. Government Printing Office: Washington, D.C. 1966.
  18. "Pentagon Doesn't Believe UFO Exeter Sightings." Excerpt from italic Haverhill Gazette italic. 25 October 1965. in Fowler, Raymond E. Addendum IIA. NICAP Massachusetts Subcommittee. In "Unidentified Flying Objects." 6015.
  19. Fowler, Raymond E. Addendum IV, UFO Report, 3 Sept. 1965. NICAP Massachusetts Subcommittee. In "Unidentified Flying Objects." 6015-6016.
  20. "UFO Identified as Ad Gimmick." italics Amesbury News italics. 6 October 1965. In Fowler, Raymond E. Addendum IV, UFO Report, 3 September 1965. 6016.
  21. Fowler, Raymond. "UFO Summary Sheet. (UFO Reports--Sept. 3, 1966). In Addendum IV, UFO Report, 3 Sept. 1965. 6020.
  22. Bertrand, Eugene, and Hunt, David. Letter to Major Hector Quintanilla, Jr. 2 Dec. 1965. Wright Patterson Air Force Base, Dayton, OH. In "Unidentified Flying Objects." 6039-6040.
  23. Brown, Harold. "Unidentified Flying Objects." 5992.
  24. Rivers, Mendel. "Unidentified Flying Objects." 6003.
  25. 1 2 Brown, Harold. "Unidentified Flying Objects." 6005.
  26. Hynek, J. Allen. "Unidentified Flying Objects." 6008.
  27. Hynek."Unidentified Flying Objects. 6046.
  28. 1 2 Jerome Clark, The UFO Book: Encyclopedia of the Extraterrestrial, p480
  29. Proceedings of the Sign Historical Group UFO History Workshop
  30. 1 2 USAF Fact Sheet 95-03
  31. Cooper, Helene; Blumenthal, Ralph; Kean, Lesie (16 tháng 12 năm 2017). “Glowing Auras and 'Black Money': The Pentagon's Mysterious U.F.O. Program”. The New York Times. Truy cập ngày 16 tháng 12 năm 2017. 
  32. Jenny Randles and Peter Houghe; The Complete Book of UFOs: An Investigation into Alien Contact and Encounters; Sterling Publishing Co, Inc, 1994; ISBN 0-8069-8132-6, p179
  33. Jenny Randles and Peter Houghe; The Complete Book of UFOs: An Investigation into Alien Contact and Encounters; Sterling Publishing Co, Inc, 1994; ISBN 0-8069-8132-6, p202
  34. J. Allen Hynek; The UFO Experience: A Scientific Inquiry; 1972; Henry Regenery Company, p180
  35. J. Allen Hynek; The UFO Experience: A Scientific Inquiry; 1972; Henry Regenery Company, p175
  36. J. Allen Hynek; The UFO Experience: A Scientific Inquiry; 1972; Henry Regenery Company, p187
  37. J. Allen Hynek; The UFO Experience: A Scientific Inquiry; 1972; Henry Regenery Company, p103
  38. Project Blue Book-About

Tài liệu tham khảo

WikiPedia: Dự án Blue Book http://www.project1947.com/shg/proceedings/shgproc... http://congressional.proquest.com/congressional/re... http://vault.fbi.gov/Project%20Blue%20Book%20(UFO)... http://nro.gov/foia/NRO_RRG_redacted.PDF http://www.nicap.org/rufo/contents.htm http://www.nidsci.org/pdf/quintanilla.pdf https://www.fold3.com/title/461/project-blue-book-... https://www.history.com/shows/project-blue-book/ab... https://www.nytimes.com/2017/12/16/us/politics/pen... https://www.youtube.com/watch?v=Nt9wI2xZEXA