Cita APA

Siebert, H., Walter, I., & Zimmermann, K. (1979). Regional environmental policy: The economic issues. New York University Press.

Citación estilo Chicago

Siebert, Horst, Ingo Walter, and Klaus Zimmermann. Regional Environmental Policy: The Economic Issues. New York: New York University Press, 1979.

Cita MLA

Siebert, Horst, et al. Regional Environmental Policy: The Economic Issues. New York University Press, 1979.