APA (7th ed.) Citation

United States. Bureau of Chemistry and Soils, Edwards, M. J., Fowler, E. D., Gray, A. L., Knobel, E. W., Smith, H. M., & Taylor, A. E. (1932). Soil survey of Polk County, Fla. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Bureau of Chemistry and Soils, M. J. Edwards, Earl D. Fowler, A. L. Gray, E. W. Knobel, H. M. Smith, and Arthur E. Taylor. Soil Survey of Polk County, Fla. Washington: U.S. GPO, 1932.

MLA (9th ed.) Citation

United States. Bureau of Chemistry and Soils, et al. Soil Survey of Polk County, Fla. U.S. GPO, 1932.