Flanagan, David
O'Reilly, 1997
Buku Teks SO
Niederst, Jennifer
O`Reilly, 1999
Buku Teks SO
Gilly, Daniel
O'Reilly & Associates, Inc., 1992
Buku Teks SO
Regulatory Compliance Associates, Inc.
Bankers Publishing Company, 1990
Buku Referensi
Finkelstein, Ellen
IDG Books, 2000
Buku Referensi