Sharma, J. P. Environmental Studies (3rd ed.). University Science Press.
Chicago Edition CitationSharma, J P. Environmental Studies. 3rd ed. Bangalore: University Science Press.
Deismireacht MLASharma, J P. Environmental Studies. 3rd ed. University Science Press.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.