Right light Copenhagen. (1997). Right light 4.: Proceedings of the 4th European conference on energy-efficient lighting, Copenhagen 19-21 November 1997. [DEF Congress Service].
Citace podle Chicago (17th ed.)Right light Copenhagen. Right Light 4.: Proceedings of the 4th European Conference on Energy-efficient Lighting, Copenhagen 19-21 November 1997. [Frederiksberg]: [DEF Congress Service], 1997.
Citace podle MLA (9th ed.)Right light Copenhagen. Right Light 4.: Proceedings of the 4th European Conference on Energy-efficient Lighting, Copenhagen 19-21 November 1997. [DEF Congress Service], 1997.
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