McCarthy, Richard C.
[American Library association;American Library association, American Library association], 2007
eBooks
Richman, Larry
[American Management Association, ], 2002
eBooks
Drago, Carl
Blackwell, 2014
Buku Teks
Shaw, Non
Mustard, Bath, 1999
Buku Teks SO
Jackson, Paul
Chancellor, 1994
Buku Referensi