United States. Soil Conservation Service & Murphy, K. E. (1977). Soil survey of St. Martin Parish, Louisiana. Dept. of Agriculture, Soil Conservation Service.
Chicago Style (17th ed.) CitationUnited States. Soil Conservation Service and Kenneth E. Murphy. Soil Survey of St. Martin Parish, Louisiana. [Washington]: Dept. of Agriculture, Soil Conservation Service, 1977.
MLA (9th ed.) CitationUnited States. Soil Conservation Service and Kenneth E. Murphy. Soil Survey of St. Martin Parish, Louisiana. Dept. of Agriculture, Soil Conservation Service, 1977.
Warning: These citations may not always be 100% accurate.