Hill, M. (2004). understanding environmental pollution (2nd.). CUP.
Citazione stile Chigago Style (17a edizione)Hill, Marquita. Understanding Environmental Pollution. 2nd. Cambridge: CUP, 2004.
Citatione MLA (9a ed.)Hill, Marquita. Understanding Environmental Pollution. 2nd. CUP, 2004.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.