Hill, M. k. (1997). Understanding Environmental Pollution. Cambridge University Press.
Čikaški stil citiranjaHill, Marquita k. Understanding Environmental Pollution. Cambridge: Cambridge University Press, 1997.
MLA način citiranjaHill, Marquita k. Understanding Environmental Pollution. Cambridge University Press, 1997.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.