Vụ UFO Sperry (Vietnamese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Vụ UFO Sperry" in Vietnamese language version.

refsWebsite

Global rank Vietnamese rank

3project1947.com

low place

low place

low place

low place

1ufothemovie.blogspot.com

low place

low place

nicap.org

Project Blue Book documents on Sperry case, NICAP (accessed 08-08-08)

project1947.com

Sperry, Letter to Flying magazine, September 1950, Project 1947 (accessed 08-08-08)
Sperry, Interview by J. E. McDonald, Project 1947
Transcript of KABC-TV interview, 1964, Project 1947

ufothemovie.blogspot.com

Sperry, Letter to R. Barrow, 1976 (accessed 08-08-08)