Martin, Teresa A.
John Wiley & Sons, 1999
Buku Referensi
Veer, Emily Vander, author
IDG Books Worldwide, Inc., 2001
Buku Teks
Andrea Tagarelli, editor
Information Science Reference, 2012
Buku Teks
Miller, Dick R., author
[American Library association, American Library association], 2004
eBooks
Graham, Ian S.
John Wiley & Sons, 1995
Buku Referensi