Tyagi, O. (1996). A Textbook of environmental chemistry. Anmol.
Chicago-čujuhus (17. p.)Tyagi, O.D. A Textbook of Environmental Chemistry. New Delhi: Anmol, 1996.
MLA-čujuhus (9. p.)Tyagi, O.D. A Textbook of Environmental Chemistry. Anmol, 1996.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.