SWARUP R. (1992). ENVIRONMENTAL POLLUTION ANALYSIS. MITTAL PUBLICATIONS.
Lua i Stíl Chicago (17ú heag.)SWARUP R. ENVIRONMENTAL POLLUTION ANALYSIS. NEW DELHI: MITTAL PUBLICATIONS, 1992.
Lua MLA (9ú heag.)SWARUP R. ENVIRONMENTAL POLLUTION ANALYSIS. MITTAL PUBLICATIONS, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.