Resolutie 3189 van de Algemene Vergadering van de Verenigde Naties
The General Assembly,
   Recognizing that Chinese is one of the five official languages of the United Nations,

   Noting that four of the five official languages have already been made working languages of the General Assembly and the Security Council, and affirming that, in the interest of efficiency in the work of the United Nations, Chinese should be accorded the same status as the other four official languages,

 Decides to include Chinese among the working languages of the General Assembly and to amend accordingly the relevant provisions of the rules of procedure of the Assembly;21
 Considers it desirable to include Chinese among the working languages of the Security Council;
 Requests the Secretary-General to transmit the present resolution to the president of the Security Council.
2206th plenary meeting,18 December 1973

21: See resolution 3191 (XXVIII)