Richard Wright. "EnvironmentalScience-TowardsaSustainableFuture,9thed.". PHI LEARNING PVT LTD.
Cita Chicago (17th ed.)Richard Wright. "EnvironmentalScience-TowardsaSustainableFuture,9thed.". PHI LEARNING PVT LTD.
Cita MLA (9th ed.)Richard Wright. "EnvironmentalScience-TowardsaSustainableFuture,9thed.". PHI LEARNING PVT LTD.
Atenció: Aquestes cites poden no estar 100% correctes.