United States. Bureau of Soils. (1906). Assignment of field parties: Soil survey. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Bureau of Soils. Assignment of Field Parties: Soil Survey. [Washington]: [publisher not identified], 1906.
MLA (9th ed.) CitationUnited States. Bureau of Soils. Assignment of Field Parties: Soil Survey. [publisher not identified], 1906.
Warning: These citations may not always be 100% accurate.