Cities of Tomorrow (Organization) & Pröhl, M. (1997). Local economic development: International research and good practices for promoting employment. Bertelsmann Foundation Publishers.
Lua i Stíl Chicago (17ú heag.)Cities of Tomorrow (Organization) agus Marga Pröhl. Local Economic Development: International Research and Good Practices for Promoting Employment. Gutersloh: Bertelsmann Foundation Publishers, 1997.
Lua MLA (9ú heag.)Cities of Tomorrow (Organization) agus Marga Pröhl. Local Economic Development: International Research and Good Practices for Promoting Employment. Bertelsmann Foundation Publishers, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.