APA-ийн эшлэл(7 дахь хэвлэлт)

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.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Polzin, F., P. von Flotow, ба C. Nolden. What Encourages Local Authorities to Engage with Energy Performance Contracting for Retrofitting? Evidence from German Municipalities. Elsevier, 2016.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Polzin, F., et al. What Encourages Local Authorities to Engage with Energy Performance Contracting for Retrofitting? Evidence from German Municipalities. Elsevier, 2016.