edited by Norman Page
Macmillan, 1991
Buku Teks SO
Dickens, Charles, 1812-1870
A.A. Knopf, 1994
Buku Teks SO
Garon, Sheldon
California Princeton Fulfillment Services, 2012
Buku Teks
Hira, Ron
[American Management Association;, ], 2005
eBooks
Whitmire, Richard
[American Management Association, ], 2010
eBooks