Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

United States Bureau of Soils & United States Department of Agriculture. Soil survey. Government Printing Office.

Chicago Citation Edition Citation

United States Bureau of Soils und United States Department of Agriculture. Soil Survey. Washington-DC: Government Printing Office.

MLA Citation Edition Citation

United States Bureau of Soils und United States Department of Agriculture. Soil Survey. Government Printing Office.