Lua APA (7ú heag.)
Gupta, O. P. (2016). Elements of environmental pollution control. Khanna Book Publishing Co.
Lua i Stíl Chicago (17ú heag.)
Gupta, Om Prakash. Elements of Environmental Pollution Control. New Delhi: Khanna Book Publishing Co, 2016.
Lua MLA (9ú heag.)
Gupta, Om Prakash. Elements of Environmental Pollution Control. Khanna Book Publishing Co, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.