Brown, H. S., Angel, D. P., & Derr, P. G. (2000). Effective environmental regulation: Learning from Poland's experience. Praeger.
Cita Chicago (17th ed.)Brown, Halina Szejnwald, David P. Angel, i Patrick George Derr. Effective Environmental Regulation: Learning from Poland's Experience. Westport, Conn.: Praeger, 2000.
Cita MLA (9th ed.)Brown, Halina Szejnwald, et al. Effective Environmental Regulation: Learning from Poland's Experience. Praeger, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.