Roles in digital reference
Artikel Jurnal
Going where the users are: live digital reference
Artikel Jurnal
Service perspectives for the digital library remote reference services
Artikel Jurnal
Liu, Jia, author
The Evaluation of worldwide digital reference services in libraries
Chandos Publishing, 2007
Buku Teks
Digital creative and information communication technology industries : reference book
Infomedia, 2012
Buku Referensi
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