Sigman, Aric, author
London, 2005
Buku Teks
Hira, Ron, author
[American Management Association;, ], 2005
eBooks
Norris, Pippa, author
Cornell Selects, an imprint of Cornell University Press, 2017
Buku Teks
Mouzelis, Nicos
Routledge, 1995
Buku Teks
Kletz, Trevor A.
Tex. : Gulf Pub, 1998.
Buku Teks