United States. Army. Ordnance Department. (1917). Safety features of firing and breech mechanisms of field, siege, and seacoast cannon. GPO.
Chicago Style (17th ed.) CitationUnited States. Army. Ordnance Department. Safety Features of Firing and Breech Mechanisms of Field, Siege, and Seacoast Cannon. [Washington]: GPO, 1917.
MLA (9th ed.) CitationUnited States. Army. Ordnance Department. Safety Features of Firing and Breech Mechanisms of Field, Siege, and Seacoast Cannon. GPO, 1917.
Warning: These citations may not always be 100% accurate.