== Kilder ==
* {{cite book|last1=Bagnasco|first1=Erminio|title=Le armi delle navi italiane nella Seconda Guerra Mondiale|date=1978|publisher=Ermanno Albertelli Editore|location=Parma|isbn=8887372403}} {{it sprog}}
* {{cite book|last1=Campbell|first1=John|title=Naval weapons of World War Two|date=1985|publisher=Naval Institute Press|location=Annapolis, Md.|isbn=0870214594}} {{en sprog}}
* Pitkänen, Mika & Simpanen, Timo. 20&nbsp;mm Suomessa - Aseet ja ampumatarvikkeet ennen vuotta 1945 <br> 20&nbsp;mm in Finland - Weapons and Ammunition prior to 1945. Apali, 2007. {{ISBN|978-952-5026-59-7}} {{fi sprog}}
* [[Jon Latimer|Latimer, Jon]]. Operation Compass 1940: Wavell's whirlwind offensive. Praeger, 2004. {{ISBN|0-275-98286-6}} {{de sprog}}
* [[Jon Latimer|Latimer, Jon]]. Tobruk 1941: Rommel's opening move. Praeger, 2004. {{ISBN|0-275-98287-4}} {{de sprog}}
* http://www.italie1935-45.com/RE/photoscopes/photoscopebreda20-65.html {{Webarchive|url=https://web.archive.org/web/20071117013208/http://www.italie1935-45.com/RE/photoscopes/photoscopebreda20-65.html |date=17. november 2007 }} {{it sprog}}
* {{cite book|title=The Encyclopedia of Weapons of World War II|author=Chris Bishop}} {{en sprog}}
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