American Library Association, 1981
Buku Teks
Reid, Rob, author
[American Management Association;, ], 2009
eBooks
Grolier Incorporated, 1997
Buku Referensi
edited by Sharon Deeds, Catherine Chastain
[American Library association, ], 2001
eBooks
Becker, Beverley C., author
[American Library association, ], 2002
eBooks