APA (7th ed.) Citation

Watkins, W. I., Deardorff, C. E., Machlis, J. A., & Avery, G. (1924). Soil survey of McCook county, South Dakota. Government Printing Office.

Chicago Style (17th ed.) Citation

Watkins, W. I., C. E. Deardorff, Joseph Arthur Machlis, and Glen Avery. Soil Survey of McCook County, South Dakota. Washington DC: Government Printing Office, 1924.

MLA (9th ed.) Citation

Watkins, W. I., et al. Soil Survey of McCook County, South Dakota. Government Printing Office, 1924.