Artikel Jurnal
Artikel Jurnal
Rubin, Richard E.
Neal-Schuman Publishers, Inc. , 1998
Buku Teks
O`Brein, James M.
[publisher not identified], [date of publication not identified]
Artikel Jurnal
Graduate School of Library, Information and Media Studies University of Tsukuba, 2002
Majalah, Jurnal, Buletin