APA (7th ed.) Citation

United States. Army. Corps of Engineers. North Central Division. (1982). Division and district boundaries. North Central Division.

Chicago Style (17th ed.) Citation

United States. Army. Corps of Engineers. North Central Division. Division and District Boundaries. [Chicago, Ill.?]: North Central Division, 1982.

MLA (9th ed.) Citation

United States. Army. Corps of Engineers. North Central Division. Division and District Boundaries. North Central Division, 1982.