Παραπομπή APA

European Commission. (1995). Renewable energy sources statistics, 1989-91. Luxembourg: Office for Official Publications of the European Communities.

Παραπομπή Chicago Style

European Commission. Renewable Energy Sources Statistics, 1989-91. Luxembourg: Office for Official Publications of the European Communities, 1995.

Παραπομπή MLA

European Commission. Renewable Energy Sources Statistics, 1989-91. Luxembourg: Office for Official Publications of the European Communities, 1995.

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