Francis J. Crosson, author
Jossey-Bass, 2010
Buku Teks
Speck, Jeff, author
Farrar, Straus and Giroux, 2012
Buku Teks
AtKisson, Alan, author
Earthscan, 2008
Buku Teks
Grimes, Sharon, author
[American Library association, American Library association], 2006
eBooks
Garland, Eric, author
American Management Association, 2007
eBooks