Παραπομπή APA

Richarz, C., Schulz, C., Zeitler, F., & Friedemann, Z. (2007). Energy-efficiency upgrades: Principles, details, examples. Basel : Munich: Birkhauser Edition Detail.

Παραπομπή Chicago Style

Richarz, Clemens, Christina Schulz, Friedemann Zeitler, and Zeitler Friedemann. Energy-efficiency Upgrades: Principles, Details, Examples. Basel : Munich: Birkhauser Edition Detail, 2007.

Παραπομπή MLA

Richarz, Clemens, Christina Schulz, Friedemann Zeitler, and Zeitler Friedemann. Energy-efficiency Upgrades: Principles, Details, Examples. Basel : Munich: Birkhauser Edition Detail, 2007.

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