Himalayan Environment Trust (India). (1991). The Himalayas: Ecology & environment. Himalayan Environment Trust.
Lua i Stíl Chicago (17ú heag.)Himalayan Environment Trust (India). The Himalayas: Ecology & Environment. New Delhi: Himalayan Environment Trust, 1991.
Lua MLA (8ú heag.)Himalayan Environment Trust (India). The Himalayas: Ecology & Environment. Himalayan Environment Trust, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.