Tham khảo Westland_N.1B

  1. ↑ James 1991, pp.72—73.
  2. 1 2 Bruce 1957, p.707.
  • Bruce, J.M. British Aeroplanes 1914-18. London:Putnam, 1957.
  • James, Derek N. Westland Aircraft since 1915. London:Putnam, 1991. ISBN 0-85177-847-X.
  • Mason, Francis K. The British Fighter since 1912. Annapolis, USA:Naval Institute Press, 1992. ISBN 1-55750-082-7.