(1998). City limits: Applications of the Atlas of Agglomerations in the European Union.
Lua i Stíl Chicago (17ú heag.)City Limits: Applications of the Atlas of Agglomerations in the European Union. Duisburg, 1998.
Lua MLA (8ú heag.)City Limits: Applications of the Atlas of Agglomerations in the European Union. 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.