Handbook of artillery :
including mobile, antiaircraft, trench and automotive matériel /
Prepared in the Office of the chief of ordnance, July, 1921.

APA Citation

United States. Army. Ordnance Dept. (1925). Handbook of artillery: including mobile, antiaircraft, trench and automotive matériel. Revised May, 1924. Washington: Government Printing Office.

MLA Citation

United States. Army. Ordnance Dept. Handbook of Artillery: Including Mobile, Antiaircraft, Trench And Automotive Matériel. Revised May, 1924. Washington: Government Printing Office, 1925.

Warning: These citations may not always be complete (especially for serials).