Significant growth of the number of electronic (digital) information resources, the increase of their share in the total structure of the sources of information is a modern trend. The term “resource” is becoming a replacement of the terms “document”, “publication”, including as the objects of bibliographing as well. There should be allocated the following groups of network information resources: firstly, web sites, web portals, electronic libraries, collections of documents, various web services and databases — multifunctional, multi-component systems of various documents, files, services, etc.; secondly, electronic documents (online media and publications, including the “networked self-publishing”). It is important to distinguish original network documents, digital copies and versions (analogues) of paper documents. Electronic information resources, including networked, now presented in a variety of bibliographic sources, can be an independent object of bibliographic reflection, however, the main trend — is the inclusion of information on the networked information resources along with the printed editions and publications in practically all types of bibliographical production. Together with the original electronic editions and publications, available only in the information and telecommunication networks, primarily in the Internet, it is advisable to include information on the available in the free remote access electronic copies or versions (analogues) of the printed documents, reflected in the generated catalogue, index, database, etc.