Pearce, D. W. (1990). Economics of natural resources and the environment. Harvester Wheatsheaf.
Cita Chicago (17th ed.)Pearce, David William. Economics of Natural Resources and the Environment. New York: Harvester Wheatsheaf, 1990.
Cita MLA (9th ed.)Pearce, David William. Economics of Natural Resources and the Environment. Harvester Wheatsheaf, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.