Organisation der Vereinten Nationen für Bildung, Wissenschaft und Kultur, Records of the General Conference, Twenty-fifth Session, Paris, 17 October-16 November 1989, Vol. 1: Resolutions, Anlage I.B.
United Nations Educational, Scientific and Cultural Organization, Records of the General Conference, Twenty-fifth Session, Paris, 17 October-16 November 1989, vol. 1: Resolutions, annex I.B.