|AviationHeritage.org - Working to document aviation heritage and history through the use of modern technologies|
|Curtiss P-40F, Lockheed Hudson, and CAC Boomerang (Daniel J. Leahy, 2014)|
National Archives of Australia [NAA] 1946, Aircraft status cards - Wirraway A20-500 to A20-757, A10297, BLOCK 108.
National Archives of Australia [NAA] 1948, RAAF Unit History sheets (Form A50) [Operations Record Book - Forms A50 and A51] Number 4 Squadron Jun 40 - Mar 48, A9186, 12.
Pacific Wrecks 2018 CA-9 Wirraway Serial Number A20-504. Retrieved 14 April 2018 from <https://www.pacificwrecks.com/aircraft/wirraway/A20-504.html>.
Wilson, S. 1991 Wirraway, Boomerang & CA-15 in Australian Service. Fyshwick: Aerospace Publications Pty. Ltd.
Record updated on 14 April 2018.