Rodwell 1968, pp. 190–191. Rodwell, Robert R (8 February 1968). "The Army's airmen". Flight International. pp. 183–191. Archived from the original on 9 December 2014. Retrieved 16 November 2014.
Rodwell 1968, p. 190. Rodwell, Robert R (8 February 1968). "The Army's airmen". Flight International. pp. 183–191. Archived from the original on 9 December 2014. Retrieved 16 November 2014.
"3 die in blazing helicopter". The Times. 7 June 1967. p. 3. Retrieved 16 December 2023 – via The Times Digital Archive.
Our Correspondent (15 May 1969). "Three die as helicopters collide". The Times. p. 2. Retrieved 16 December 2023 – via The Times Digital Archive. {{cite news}}: |author= has generic name (help)
Rodwell 1968, pp. 190–191. Rodwell, Robert R (8 February 1968). "The Army's airmen". Flight International. pp. 183–191. Archived from the original on 9 December 2014. Retrieved 16 November 2014.
Rodwell 1968, p. 190. Rodwell, Robert R (8 February 1968). "The Army's airmen". Flight International. pp. 183–191. Archived from the original on 9 December 2014. Retrieved 16 November 2014.