(1990). Heliotrop, Solargarten, Energie-Dach-System. Bauwelt.
Chicago Style (17th ed.) Citation"Heliotrop, Solargarten, Energie-Dach-System." Bauwelt 1990.
MLA (8th ed.) Citation"Heliotrop, Solargarten, Energie-Dach-System." Bauwelt, 1990.
Warning: These citations may not always be 100% accurate.