Cities of Tomorrow (Organization) & Pröhl, M. (1997). Local economic development: International research and good practices for promoting employment. Bertelsmann Foundation Publishers.
Chicago-referens (17:e uppl.)Cities of Tomorrow (Organization) och Marga Pröhl. Local Economic Development: International Research and Good Practices for Promoting Employment. Gutersloh: Bertelsmann Foundation Publishers, 1997.
MLA-referens (9:e uppl.)Cities of Tomorrow (Organization) och Marga Pröhl. Local Economic Development: International Research and Good Practices for Promoting Employment. Bertelsmann Foundation Publishers, 1997.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.