Hill, M. K. (2010). Understanding environmental pollution (3rd ed.). Cambridge University press.
Chicago-čujuhus (17. p.)Hill, Marquita K. Understanding Environmental Pollution. 3rd ed. New York: Cambridge University press, 2010.
MLA-čujuhus (9. p.)Hill, Marquita K. Understanding Environmental Pollution. 3rd ed. Cambridge University press, 2010.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.