Eicker, U. (2014). Energy efficient buildings with solar and geothermal resources. John Wiley & Sons Inc..
Lua i Stíl Chicago (17ú heag.)Eicker, Ursula. Energy Efficient Buildings with Solar and Geothermal Resources. Chichester, West Sussex, United Kingdom: John Wiley & Sons Inc., 2014.
Lua MLA (9ú heag.)Eicker, Ursula. Energy Efficient Buildings with Solar and Geothermal Resources. John Wiley & Sons Inc., 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.