Shah,P. (2017). Environmental Studies. P Jamunadas.
Chicago-čujuhus (17. p.)Shah,P. Environmental Studies. Mumbai: P Jamunadas, 2017.
MLA-čujuhus (9. p.)Shah,P. Environmental Studies. P Jamunadas, 2017.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.