AHLUWALIA, V. M. (2019). Environmental science. Ane Books.
Lua i Stíl Chicago (17ú heag.)AHLUWALIA, V.K. Malhotra. Environmental Science. Ane Books, 2019.
Lua MLA (9ú heag.)AHLUWALIA, V.K. Malhotra. Environmental Science. Ane Books, 2019.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.