Easton, Geoff, author
Prentice-Hall, 1992
Buku Teks
Potts, Keith, author
Taylor &Fransic, 2008
Buku Teks
GraceAnne A. DeCandido, editor
[American Library association;, ], 2001
eBooks
DeCandido, GraceAnne A., author
[American Library Association;American Library Association, American Library Association], 2001
eBooks
Phillips,Patricia Pulliam, author
American Society for Training & Development, 2012
eBooks