United States. Marine Corps. (1997). Supporting arms observer, spotter, and controller. U.S. Marine Corps.
Chicago Style (17th ed.) CitationUnited States. Marine Corps. Supporting Arms Observer, Spotter, and Controller. [Washington, DC]: U.S. Marine Corps, 1997.
MLA (9th ed.) CitationUnited States. Marine Corps. Supporting Arms Observer, Spotter, and Controller. U.S. Marine Corps, 1997.
Warning: These citations may not always be 100% accurate.