Colt Official Police (English Wikipedia)

"Colt Official Police" Archived 2008-06-10 at the Wayback Machine, Bellum Web site. Accessed August 20, 2008.
"Colt Commando" Archived 2008-04-30 at the Wayback Machine, Bellum Web site. Accessed August 21, 2008.

books.google.com

Supica, Jim; Nahas, Richard (2007). Standard Catalog of Smith & Wesson. Iola, Wisconsin: F+W Media, Inc. pp. 141–143, 174, 210–211. ISBN 978-0-89689-293-4.
de Quesada, Alejandro (20 November 2011). The Chaco War 1932-35: South America's greatest modern conflict. Men At Arms No. 474. Osprey Publishing. pp. 18, 44. ISBN 978-1-84908-901-2.

Ayoob, Massad. "The Colt Official Police: 61 years of production, 99 years of service", Guns magazine. BNET Web site – Find articles. Accessed August 13, 2008.

Pate, Charles, The World War II Commando Revolver Archived 2011-01-26 at the Wayback Machine, Man At Arms Magazine, Mowbray Publishing (October 1997), retrieved 3 April 2011

Staff, ed. (12 August 2016). "Belize Tourism Scores Gold With Simone Biles Tweet". Haiti Gazette. Archived from the original on 29 August 2016. Retrieved 27 August 2016.

Ch. M. Kieffer (15 December 1983). "Afghan". Encyclopædia Iranica (online ed.). Columbia University. Archived from the original on 16 November 2013.

"Serial Number Data". Archived from the original on 2012-05-01. Retrieved 2020-08-14.

"Colt's Official Police Revolver" Archived 2008-09-26 at the Wayback Machine, Shooting Times magazine Web site – Handgun Reviews. Accessed August 13, 2008.

"Serial Number Data". Archived from the original on 2012-05-01. Retrieved 2020-08-14.
"Colt's Official Police Revolver" Archived 2008-09-26 at the Wayback Machine, Shooting Times magazine Web site – Handgun Reviews. Accessed August 13, 2008.
"Colt Official Police" Archived 2008-06-10 at the Wayback Machine, Bellum Web site. Accessed August 20, 2008.
"Colt Commando" Archived 2008-04-30 at the Wayback Machine, Bellum Web site. Accessed August 21, 2008.
Pate, Charles, The World War II Commando Revolver Archived 2011-01-26 at the Wayback Machine, Man At Arms Magazine, Mowbray Publishing (October 1997), retrieved 3 April 2011
Ch. M. Kieffer (15 December 1983). "Afghan". Encyclopædia Iranica (online ed.). Columbia University. Archived from the original on 16 November 2013.
Staff, ed. (12 August 2016). "Belize Tourism Scores Gold With Simone Biles Tweet". Haiti Gazette. Archived from the original on 29 August 2016. Retrieved 27 August 2016.
Miller, Tracy, ed. (7 October 2009). "Mapping the Global Muslim Population: A Report on the Size and Distribution of the World's Muslim Population". Pew Research Center. Archived from the original on 27 March 2010. Retrieved 9 June 2010.
http://www.law.go.kr/lsInfoP.do?lsiSeq=61603&efYd=19880225#0000 Archived 29 May 2016 at the Wayback Machine

Sugiura, Hisaya (September 2015). "Pistols of the Japanese police in the postwar era". Gun Professionals [ja]. Hobby Japan. pp. 72–79.