Παραπομπή APA

Folmer, H., Gabel, H. L., Opschoor, H., Folmer, H., Gabel, H. L., & Opschoor, J. B. 1. (1997). Principles of environmental and resource economics: A guide for students and decision-makers. Cheltenham: Edward Elgar.

Παραπομπή Chicago Style

Folmer, Henk, Henry Landis Gabel, Hans Opschoor, Henk Folmer, H. Landis Gabel, and Johannes B. 1944- Opschoor. Principles of Environmental and Resource Economics: A Guide for Students and Decision-makers. Cheltenham: Edward Elgar, 1997.

Παραπομπή MLA

Folmer, Henk, et al. Principles of Environmental and Resource Economics: A Guide for Students and Decision-makers. Cheltenham: Edward Elgar, 1997.

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