Black, Kenneth
Prentice-Hall, 2000
Buku Teks
Health Insurance Association, 2002
Buku Teks
R & R Newkirk/Longman, 1985
Buku Referensi
Huebner, S. S.
Appleton Century Crofts, 1972
Buku Teks
Larry E. Breitenbach ...[et al.]
Health Insurance Association, 1994
Buku Teks