(1998). Comparative City Statistics: Major Cities of Scandinavia, Tallinn and St. Petersburg.
Chicago-Zitierstil (17. Ausg.)Comparative City Statistics: Major Cities of Scandinavia, Tallinn and St. Petersburg. Helsinki, 1998.
MLA-Zitierstil (8. Ausg.)Comparative City Statistics: Major Cities of Scandinavia, Tallinn and St. Petersburg. 1998.
警告：這些引文格式不一定是100％准確.