Παραπομπή σε μορφή APA (7η εκδ.)
United States. Department of Agriculture. Soil Survey Staff & United States. Government Printing Office. (1975). Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys. United States Government Printing Office.
Παραπομπή σε μορφή Chicago (17η εκδ.)
United States. Department of Agriculture. Soil Survey Staff και United States. Government Printing Office. Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys. United States Government Printing Office, 1975.
Παραπομπή σε μορφή MLA (9th εκδ.)
United States. Department of Agriculture. Soil Survey Staff και United States. Government Printing Office. Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys. United States Government Printing Office, 1975.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.