Freeman, A. M., Herriges, J. A., & Kling, C. L. (2014). The measurement of environmental and resource values: Theory and methods (Third edition.). RFF Press.
Chicago-Zitierstil (17. Ausg.)Freeman, A. Myrick, Joseph A. Herriges, und Catherine L. Kling. The Measurement of Environmental and Resource Values: Theory and Methods. Third edition. Abingdon, Oxon: RFF Press, 2014.
MLA-Zitierstil (9. Ausg.)Freeman, A. Myrick, et al. The Measurement of Environmental and Resource Values: Theory and Methods. Third edition. RFF Press, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.