Karl-Gran Mler, J. R. V. (2005). Valuing Environmental Changes. ELSEVIER.
Cita Chicago (17th ed.)Karl-Gran Mler, Jeffrey R. Vincent. Valuing Environmental Changes. ELSEVIER, 2005.
Cita MLA (8th ed.)Karl-Gran Mler, Jeffrey R. Vincent. Valuing Environmental Changes. ELSEVIER, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.