Richard Wright. "EnvironmentalScience-TowardsaSustainableFuture,9thed.". PHI LEARNING PVT LTD.
Citazione stile Chigago Style (17a edizione)Richard Wright. "EnvironmentalScience-TowardsaSustainableFuture,9thed.". PHI LEARNING PVT LTD.
Citatione MLA (9a ed.)Richard Wright. "EnvironmentalScience-TowardsaSustainableFuture,9thed.". PHI LEARNING PVT LTD.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.