Παραπομπή APA

Weenen, H. v. (1997). Design for sustainable development. Guides and manuals. Luxembourg: Office for Official Publications of the European Communities.

Παραπομπή Chicago Style

Weenen, Hans van. Design for Sustainable Development. Guides and Manuals. Luxembourg: Office for Official Publications of the European Communities, 1997.

Παραπομπή MLA

Weenen, Hans van. Design for Sustainable Development. Guides and Manuals. Luxembourg: Office for Official Publications of the European Communities, 1997.

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