Liff, Stewart, author
[American Management Association;, ], 2011
eBooks
Chevalier, Roger, author
American Management Association, 2007
eBooks
Bierman, Harold, author
The Free Press, 1980
Buku Teks
McGraw-Hill, 1970
Buku Teks
Harmon, Paul, author
Morgan Kaufman Publisher, 2003
Buku Teks