International Federation for Documentation\nInternational Federation for Information and Documentation\nUDC Consortium. (2022). Extensions and Corrections to the UDC. International Federation for Documentation.
Chicago-viite (17. p.)International Federation for Documentation\nInternational Federation for Information and Documentation\nUDC Consortium. Extensions and Corrections to the UDC. The Hague, Holanda: International Federation for Documentation, 2022.
MLA-viite (8. p.)International Federation for Documentation\nInternational Federation for Information and Documentation\nUDC Consortium. Extensions and Corrections to the UDC. International Federation for Documentation, 2022.
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