Guidelines for subject access in national bibliographies, 2012 ECIP t.p. (Yvonne Jahns) Annex 2 (Yvonne Jahns; Deutsche Nationalbibliothek, Germany; Chair 2009-2012 of the IFLA Working Group on Guidelines for Subject Access by National Bibliographic Agencies)
OCLC, searched June 7, 2012 (hdg.: Jahns, Yvonne; usage: Yvonne Jahns; publications in English and German)