United States. Soil Conservation Service, Arkansas Agricultural Experiment Station, & Gill, H. V. (1980). Soil survey of Calhoun and Dallas Counties, Arkansas. Dept. of Agriculture, Soil Conservation Service.
Chicago Style (17th ed.) CitationUnited States. Soil Conservation Service, Arkansas Agricultural Experiment Station, and Hiram V. Gill. Soil Survey of Calhoun and Dallas Counties, Arkansas. [Washington]: Dept. of Agriculture, Soil Conservation Service, 1980.
MLA (9th ed.) CitationUnited States. Soil Conservation Service, et al. Soil Survey of Calhoun and Dallas Counties, Arkansas. Dept. of Agriculture, Soil Conservation Service, 1980.
Warning: These citations may not always be 100% accurate.