Não informado. (2001). Annual Review. Rubber Research Institute of Sri Lanka.
Lua i Stíl Chicago (17ú heag.)Não informado. Annual Review. Colombo: Rubber Research Institute of Sri Lanka, 2001.
Lua MLA (8ú heag.)Não informado. Annual Review. Rubber Research Institute of Sri Lanka, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.