United States. Office of Civilian Defense. (1942). Notes on City Gas for Air Raid Wardens. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Office of Civilian Defense. Notes on City Gas for Air Raid Wardens. [Washington]: [s.n.], 1942.
MLA (9th ed.) CitationUnited States. Office of Civilian Defense. Notes on City Gas for Air Raid Wardens. [s.n.], 1942.
Warning: These citations may not always be 100% accurate.