Polzin, F., von Flotow, P., & Nolden, C. (2016). What encourages local authorities to engage with energy performance contracting for retrofitting? evidence from German municipalities. Elsevier.
Chicago-referens (17:e uppl.)Polzin, F., P. von Flotow, och C. Nolden. What Encourages Local Authorities to Engage with Energy Performance Contracting for Retrofitting? Evidence from German Municipalities. Elsevier, 2016.
MLA-referens (9:e uppl.)Polzin, F., et al. What Encourages Local Authorities to Engage with Energy Performance Contracting for Retrofitting? Evidence from German Municipalities. Elsevier, 2016.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.