edited by Arthur Waldhorn, Olga S. Weber, Arthur Zeiger
R.R. Bowker, 1990
Buku Teks
Saricks, Joyce G., author
[American Management Association, ], 2009
eBooks
Karl, Frederick R., author
Thames & Hudson, 1970
Buku Teks
Hock, Randolph, author
Cyber Age Books, 2004
Buku Teks
Hudson, Kenneth, author
MacMilan Press, 1980
Buku Referensi