APA (7th ed.) Citation

Bonnell, S. M. (1990). Soil survey of Rockland County, New York. The Service.

Chicago Style (17th ed.) Citation

Bonnell, Stephen M. Soil Survey of Rockland County, New York. [Washington, D.C.?]: The Service, 1990.

MLA (9th ed.) Citation

Bonnell, Stephen M. Soil Survey of Rockland County, New York. The Service, 1990.