Wild, A. (1993). Soils and the Environment: An Introduction. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Wild, Alan. Soils and the Environment: An Introduction. Cambridge: Cambridge University Press, 1993.
Lua MLA (9ú heag.)Wild, Alan. Soils and the Environment: An Introduction. Cambridge University Press, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.