International Federation of Library Associations and Institutions. Working Group on Guidelines for Subject Access by National Bibliographic Agencies, ebrary, Inc, & Jahns, Y. (2012). Guidelines for subject access in national bibliographies. De Gruyter Saur.

International Federation of Library Associations and Institutions. Working Group on Guidelines for Subject Access by National Bibliographic Agencies, Inc ebrary, and Yvonne Jahns. Guidelines for Subject Access in National Bibliographies. Berlin ; Boston: De Gruyter Saur, 2012.

International Federation of Library Associations and Institutions. Working Group on Guidelines for Subject Access by National Bibliographic Agencies, et al. Guidelines for Subject Access in National Bibliographies. De Gruyter Saur, 2012.