APA
Soil Survey Staff S. C. S. U. S. D. o. A., . (1960). Soil Classification. Soil Survey Staff, Soil Conservation Service, United States Department of Agriculture: Washington.
Chicago
Soil Survey Staff Soil Conservation Service United States Department of Agriculture, . 1960. Soil Classification. Soil Survey Staff, Soil Conservation Service, United States Department of Agriculture: Washington.
Harvard
Soil Survey Staff S. C. S. U. S. D. o. A., . (1960). Soil Classification. Soil Survey Staff, Soil Conservation Service, United States Department of Agriculture: Washington.
MLA
Soil Survey Staff Soil Conservation Service United States Department of Agriculture, . Soil Classification. Soil Survey Staff, Soil Conservation Service, United States Department of Agriculture: Washington. 1960.
