Παραπομπή APA

Capella,Roberta. (1999). Sustainable cities and energy policies. Springer-Verlag.

Παραπομπή Chicago Style

Capella,Roberta. Sustainable Cities and Energy Policies. New York: Springer-Verlag, 1999.

Παραπομπή MLA

Capella,Roberta. Sustainable Cities and Energy Policies. Springer-Verlag, 1999.