NIJKAMP, P. (1976). Environmental economics. Martinus Nijhoff Social Sciences Division.
Cita Chicago (17th ed.)NIJKAMP, Peter. Environmental Economics. Leiden: Martinus Nijhoff Social Sciences Division, 1976.
Cita MLA (9th ed.)NIJKAMP, Peter. Environmental Economics. Martinus Nijhoff Social Sciences Division, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.