International Federation of Library Associations, ebrary, Inc, & Walravens, H. (2011). Newspapers: Legal deposit and research in the digital era. De Gruyter.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)International Federation of Library Associations, Inc ebrary, ба Hartmut Walravens. Newspapers: Legal Deposit and Research in the Digital Era. Berlin: De Gruyter, 2011.
MLA -ийн эшлэл (9 дэх хэвлэлт)International Federation of Library Associations, et al. Newspapers: Legal Deposit and Research in the Digital Era. De Gruyter, 2011.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.