Black, Kenneth
Prentice-Hall, 2000
Buku Teks
Health Insurance Association, 2002
Buku Teks
R & R Newkirk/Longman, 1985
Buku Referensi
Larry E. Breitenbach ...[et al.]
Health Insurance Association, 1994
Buku Teks
by Health Insurance Association of America
Health Insurance Association of America, 1994
Buku Teks