Haworth Press, 1984
Buku Referensi
Lankes, R. David
Facet Publishing, 2003
Buku Teks
Kern, M. Kathleen
[American Management Association, ], 2009
eBooks
McMenemy, David
Facet, 2006
Buku Referensi
Cassell, Kay Ann
Neal-Schuman, an imprint of the American Library Association, 2013
Buku Teks