(1998). City limits: Applications of the Atlas of Agglomerations in the European Union.
Chicago-Zitierstil (17. Ausg.)City Limits: Applications of the Atlas of Agglomerations in the European Union. Duisburg, 1998.
MLA-Zitierstil (8. Ausg.)City Limits: Applications of the Atlas of Agglomerations in the European Union. 1998.
警告：这些引文格式不一定是100％准确.