Northrop YA-9 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Northrop YA-9" in English language version.

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162^nd place

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aviationweek.com

Aviation Week 1972, p. 109. "Northrop Streamlines A-9A Management". Aviation Week and Space Technology. Vol. 96, no. 26. 26 June 1972. pp. 107–113.
Fink 1972a, pp. 45–46. Fink, Donald E. (2 October 1972). "Contractors Prepare for 90-Day AX Flyoff". Aviation Week and Space Technology. Vol. 97, no. 14. pp. 44–48.{{cite magazine}}: CS1 maint: date and year (link)
Aviation Week 1972, p. 113. "Northrop Streamlines A-9A Management". Aviation Week and Space Technology. Vol. 96, no. 26. 26 June 1972. pp. 107–113.
Fink 1972a, pp. 44–46. Fink, Donald E. (2 October 1972). "Contractors Prepare for 90-Day AX Flyoff". Aviation Week and Space Technology. Vol. 97, no. 14. pp. 44–48.{{cite magazine}}: CS1 maint: date and year (link)
Fink 1972b, p. 20. Fink, Donald E. (11 December 1972). "USAF Completes AX Flight Evaluations". Aviation Week and Space Technology. Vol. 97, no. 24. p. 20.{{cite magazine}}: CS1 maint: date and year (link)

Richardson 1978, pp. 29–30. Richardson, Doug (1 July 1978). "Quiet and vertical at NASA Ames". Flight International. Vol. 114, no. 3515. pp. 29–32.

Jesse & Engbrecht 1996, p. 58. Jesse, William; Engbrecht, Bradley (July 1996). "Not Quite Ten: Northrop's A-9, A-X runner-up". Air Enthusiast. No. 64. pp. 57–59. ISSN 0143-5450.
Jesse & Engbrecht 1996, pp. 58–59. Jesse, William; Engbrecht, Bradley (July 1996). "Not Quite Ten: Northrop's A-9, A-X runner-up". Air Enthusiast. No. 64. pp. 57–59. ISSN 0143-5450.
Jesse & Engbrecht 1996, p. 59. Jesse, William; Engbrecht, Bradley (July 1996). "Not Quite Ten: Northrop's A-9, A-X runner-up". Air Enthusiast. No. 64. pp. 57–59. ISSN 0143-5450.