Bertoldi, P., & Rezessy, S. (2005). Energy service companies in Europe. Office for Official Publications of the European Communities.
Citace podle Chicago (17th ed.)Bertoldi, Paolo, a Silvia Rezessy. Energy Service Companies in Europe. Luxembourg: Office for Official Publications of the European Communities, 2005.
Citace podle MLA (9th ed.)Bertoldi, Paolo, a Silvia Rezessy. Energy Service Companies in Europe. Office for Official Publications of the European Communities, 2005.
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