Elison, Alan L.
Macmillan, 1991
Buku Teks
Becker, William E., author
Addison-Wesley, 1987
Buku Teks
Lambourn, Simon
Longman, 1974
Buku Teks
Gordon, Alan
Institute of Risk Management, 1987
Buku Teks
by Donald Greenberg [and others]
Addison-Wesley, 1982
Buku Teks