APA
Folmer H., Opschoor H. (. & Gabel L. (1995). Principles of environment and resource economics: A guide fo. Aldershot: Edward Elgar.
Chicago
Folmer Henk, Opschoor Hans (eds) and Gabel Landis. 1995. Principles of environment and resource economics: A guide fo. Aldershot: Edward Elgar.
Harvard
Folmer H., Opschoor H. (. and Gabel L. (1995). Principles of environment and resource economics: A guide fo. Aldershot: Edward Elgar.
MLA
Folmer Henk, Opschoor Hans (eds) and Gabel Landis. Principles of environment and resource economics: A guide fo. Aldershot: Edward Elgar. 1995.