United Nations Educational, Scientific and Cultural Organization UNESCO. (1991). Survey of the information service needs of UNESCO member states: Summary. Clearing House Co-ordinating Unit, Unesco.
Čikaški stil citiranja (17. izdanje)United Nations Educational, Scientific and Cultural Organization UNESCO. Survey of the Information Service Needs of UNESCO Member States: Summary. [Paris]: Clearing House Co-ordinating Unit, Unesco, 1991.
MLA način citiranja (9. izdanje)United Nations Educational, Scientific and Cultural Organization UNESCO. Survey of the Information Service Needs of UNESCO Member States: Summary. Clearing House Co-ordinating Unit, Unesco, 1991.
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