APA

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

Chicago

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

Harvard

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

MLA

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