International Federation for Documentation\nInternational Federation for Information and Documentation\nUDC Consortium. (2022). Extensions and Corrections to the UDC. International Federation for Documentation.
Citação do estilo Chicago (17ª ed.)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.
Citação MLA (8ª ed.)International Federation for Documentation\nInternational Federation for Information and Documentation\nUDC Consortium. Extensions and Corrections to the UDC. International Federation for Documentation, 2022.
警告：這些引文格式不一定是100％准確.