Narayanan, P. Environmental pollution: Principles, analysis and control.
Lua i Stíl Chicago (17ú heag.)Narayanan, P. Environmental Pollution: Principles, Analysis and Control.
Lua MLA (8ú heag.)Narayanan, P. Environmental Pollution: Principles, Analysis and Control.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.