8. bài đọc đục lỗ
Mufon ufo journal 1973 11. november - skylook
Mufon ufo journal 1973 8. august - skylook
Fortean Research Journal (Ray Boeche)
Mufon ufo journal 1973 12. december - skylook
Crash at corona stanton friedman
MUFON UFO Journal - 1998 12. December
MUFON UFO Journal - 1997 5. May
MUFON UFO Journal - 1973 12. December - Skylook
MUFON UFO Journal - 1996 9. September
MUFON UFO Journal - 1990 8. August
