GREENLAND, D. (1981). Characterization of soils in relation: To their classification and management for crop production. Clarendon Press.
Lua i Stíl Chicago (17ú heag.)GREENLAND, D.J. Characterization of Soils in Relation: To Their Classification and Management for Crop Production. Oxford: Clarendon Press, 1981.
Lua MLA (9ú heag.)GREENLAND, D.J. Characterization of Soils in Relation: To Their Classification and Management for Crop Production. Clarendon Press, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.