National Bureau of Soil Survey and Land Use Planning. (2008). Annual report 2007-08. National Bureau of Soil Survey and Land Use Planning.
Lua i Stíl Chicago (17ú heag.)National Bureau of Soil Survey and Land Use Planning. Annual Report 2007-08. Nagpur: National Bureau of Soil Survey and Land Use Planning, 2008.
Lua MLA (9ú heag.)National Bureau of Soil Survey and Land Use Planning. Annual Report 2007-08. National Bureau of Soil Survey and Land Use Planning, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.