Παραπομπή APA

European Consultative Forum on the Environment and Sustainable Development. (2005). LINGUA products 2005. Luxembourg: Office for Official Publications of the European Communities.

Παραπομπή Chicago Style

European Consultative Forum on the Environment and Sustainable Development. LINGUA Products 2005. Luxembourg: Office for Official Publications of the European Communities, 2005.

Παραπομπή MLA

European Consultative Forum on the Environment and Sustainable Development. LINGUA Products 2005. Luxembourg: Office for Official Publications of the European Communities, 2005.

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