United States. Bureau of Soils. (1912). Soils of eastern U.S. and their use: XL. Marsh and swamp. GPO.
Chicago Style (17th ed.) CitationUnited States. Bureau of Soils. Soils of Eastern U.S. and Their Use: XL. Marsh and Swamp. [Washington]: GPO, 1912.
MLA (9th ed.) CitationUnited States. Bureau of Soils. Soils of Eastern U.S. and Their Use: XL. Marsh and Swamp. GPO, 1912.
Warning: These citations may not always be 100% accurate.