Cita APA

(1999). Soil Taxonomy: A basic system of soil classification for making and interpreting soil surveys (2.ed.). Washington: USDA-NRCS.

Citación estilo Chicago

Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys. 2.ed. Washington: USDA-NRCS, 1999.

Cita MLA

Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys. 2.ed. Washington: USDA-NRCS, 1999.