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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Federation of Library Associations and Institutions. Working Group on Guidelines for Subject Access by National Bibliographic Agencies, Inc ebrary, و Yvonne Jahns. Guidelines for Subject Access in National Bibliographies. Berlin ; Boston: De Gruyter Saur, 2012.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)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.