edited by Ronald J. Burke, Andrew J. Noblet
Edward Elgar, 2013
Buku Teks
Randall S.Schuler, Susan E.Jackson, editor
Blackwell Publisher, 2000
Buku Teks
Mike Millmore, Philip Lewis, Mark Saunders, Adrian Thornhill, Trevor Morrow
Prentice-Hall, 2007
Buku Teks
Stone, Raymond J.
John Wiley & Sons, 1995
Buku Teks
Carrell, Michael R.
Macmillan, 1992
Buku Teks