Morris, James R. (2011). The 3 Gun, Multi-Gun Report. Authorhouse (self-published). p. 1. ISBN978-1-456-75798-4. "Kurt Miller [..] about the origin of 3-Gun: As far as I know the first of its kind was the S.O.F. World Championship 3-Gun Tactical Match. It started in 1979 and the first couple of matches were held at Freedom Missouri."
bsrc.co.uk
Maddison, R. J. (19 April 2011). Shooting at Moving Targets(PDF) (Report). p. 12. Archived(PDF) from the original on 31 October 2019. Retrieved 31 October 2019. "Moving target shooting is the original 'Practical Rifle' discipline."
"Drammens lag, Viken 1 stridsskyting 1960". Det frivillige Skyttervesen (in Norwegian). Drammens Skyttersamlag. 14 August 2018. Archived from the original on 31 October 2019. Retrieved 31 October 2019.
"The Pike-Adams Sportsmen's Alliance: A Brief History". PASA Park. Archived from the original on 11 February 2019. Retrieved 31 October 2019. "PASA has for 29 years also been home to a wide variety of national and international championship shooting sports events, including [... the] inaugural USPSA National 3-Gun Championship (1990)"
Maddison, R. J. (19 April 2011). Shooting at Moving Targets(PDF) (Report). p. 12. Archived(PDF) from the original on 31 October 2019. Retrieved 31 October 2019. "Moving target shooting is the original 'Practical Rifle' discipline."
"Drammens lag, Viken 1 stridsskyting 1960". Det frivillige Skyttervesen (in Norwegian). Drammens Skyttersamlag. 14 August 2018. Archived from the original on 31 October 2019. Retrieved 31 October 2019.
"The Pike-Adams Sportsmen's Alliance: A Brief History". PASA Park. Archived from the original on 11 February 2019. Retrieved 31 October 2019. "PASA has for 29 years also been home to a wide variety of national and international championship shooting sports events, including [... the] inaugural USPSA National 3-Gun Championship (1990)"