APA
"United States G. o. P. I. S. a. A. E. (. o. (. S. S., "United States G. o. P. I. S. a. A. E. (. o. (. S. S., . (1966). Soil survey manual. Washington: Bureau of Soils and Agricultural Engineering.
Chicago
"United States Government of Plant Industry Soils and Agricultural Engineering (Bureau of...) (Soil Survey Staff)", "United States Government of Plant Industry Soils and Agricultural Engineering (Bureau of...) (Soil Survey Staff)", . 1966. Soil survey manual. Washington: Bureau of Soils and Agricultural Engineering.
Harvard
"United States G. o. P. I. S. a. A. E. (. o. (. S. S., "United States G. o. P. I. S. a. A. E. (. o. (. S. S., . (1966). Soil survey manual. Washington: Bureau of Soils and Agricultural Engineering.
MLA
"United States Government of Plant Industry Soils and Agricultural Engineering (Bureau of...) (Soil Survey Staff)", "United States Government of Plant Industry Soils and Agricultural Engineering (Bureau of...) (Soil Survey Staff)", . Soil survey manual. Washington: Bureau of Soils and Agricultural Engineering. 1966.
