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Lua i Stíl Chicago (17ú heag.)World Conference of Local governments, Washington, D. C. , 1961, agus International Union of Local Authorities. Automation and Mechanization in Local Government Administration: Papers Presented at the World Conference of Local Governments, June 15-20, 1961. The Hague: M. Nijhoff for the International Union of Local Authorities, 1962.
Lua MLA (9ú heag.)World Conference of Local governments, Washington, D. C. , 1961, agus International Union of Local Authorities. Automation and Mechanization in Local Government Administration: Papers Presented at the World Conference of Local Governments, June 15-20, 1961. M. Nijhoff for the International Union of Local Authorities, 1962.