एपीए उद्धरण

Hill, M. k. (1997). Understanding Environmental Pollution. Cambridge University Press.

शिकागो स्टाइल उद्धरण

Hill, Marquita k. Understanding Environmental Pollution. Cambridge: Cambridge University Press, 1997.

एमएलए उद्धरण

Hill, Marquita k. Understanding Environmental Pollution. Cambridge University Press, 1997.