Joseph, T. (2004). Environmental management (2nd.). Himalaya.
Lua i Stíl Chicago (17ú heag.)Joseph, T. Environmental Management. 2nd. Mumbai: Himalaya, 2004.
Lua MLA (9ú heag.)Joseph, T. Environmental Management. 2nd. Himalaya, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.