APA

Hill Marquita K,, . (1997). Understanding environmental pollution. Cambridge: Cambridge University Press.

Chicago

Hill Marquita K,, . 1997. Understanding environmental pollution. Cambridge: Cambridge University Press.

Harvard

Hill Marquita K,, . (1997). Understanding environmental pollution. Cambridge: Cambridge University Press.

MLA

Hill Marquita K,, . Understanding environmental pollution. Cambridge: Cambridge University Press. 1997.