United States. Agricultural Adjustment Administration. (1939). Part 2, procedure for determination of performance by ground measurements [to insure crop acreages, land use, and soil-building practices carried out under soil conservation program]. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Agricultural Adjustment Administration. Part 2, Procedure for Determination of Performance by Ground Measurements [to Insure Crop Acreages, Land Use, and Soil-building Practices Carried Out Under Soil Conservation Program]. [Washington]: [s.n.], 1939.
MLA (9th ed.) CitationUnited States. Agricultural Adjustment Administration. Part 2, Procedure for Determination of Performance by Ground Measurements [to Insure Crop Acreages, Land Use, and Soil-building Practices Carried Out Under Soil Conservation Program]. [s.n.], 1939.