APA Edition Citation

Siebert,Horst, & Walter,Ingo. Regional environmental policy: The economic issues. The Macmillan Press Ltd.

Chicago Edition Citation

Siebert,Horst, and Walter,Ingo. Regional Environmental Policy: The Economic Issues. London: The Macmillan Press Ltd.

MLA Edition Citation

Siebert,Horst, and Walter,Ingo. Regional Environmental Policy: The Economic Issues. The Macmillan Press Ltd.

Warning: These citations may not always be 100% accurate.