APA (7th ed.) Citation

Kerr, J. A., Watkins, W. I., Pierre, W. H., & Machlis, J. A. (1924). Soil survey of Union County, South Dakota. Government Printing Office.

Chicago Style (17th ed.) Citation

Kerr, J. A., W. I. Watkins, W. H. Pierre, and J. A. Machlis. Soil Survey of Union County, South Dakota. Washington: Government Printing Office, 1924.

MLA (9th ed.) Citation

Kerr, J. A., et al. Soil Survey of Union County, South Dakota. Government Printing Office, 1924.