Andrews, Dorine C.
Yourdon Press, 1994
Buku Teks
Daniels, Lawrence J., 1942-
[American Management Association;, ], 2013
eBooks
John Wiley & Sons, 1999
Buku Teks
Robinson, Richard D.
The Dryden Press, 1978
Buku Teks
Gyeszly, Suzanne D.
The Borgo Press, 1994
Buku Referensi