Lancaster, F. Wilfrid, author
Uninersity of Illinois, 1993
Buku Teks
Lancaster, F. Wilfrid, author
The Library Association, 1988
Buku Teks
Gawain, Shakti, author
Whatever Publisher, 2002
Buku Teks
Artikel Jurnal
Fisher, Patricia H., author
[American Library association, American Library association], 2006
eBooks