FitzPatrick, E. A. (1988). Soil horizon, designation, and classification: A coordinate system for defining soil horizons and their use as the basic elements in soil classification for different purposes. International Soil Reference and Information Centre (IRIC).
Citación estilo ChicagoFitzPatrick, Ewart Adsil. Soil Horizon, Designation, and Classification: A Coordinate System for Defining Soil Horizons and Their Use As the Basic Elements in Soil Classification for Different Purposes. Wageningen, Netherlands: International Soil Reference and Information Centre (IRIC), 1988.
Cita MLAFitzPatrick, Ewart Adsil. Soil Horizon, Designation, and Classification: A Coordinate System for Defining Soil Horizons and Their Use As the Basic Elements in Soil Classification for Different Purposes. Wageningen, Netherlands: International Soil Reference and Information Centre (IRIC), 1988.