Black, Kenneth
Prentice-Hall, 2000
Buku Teks
Health Insurance Association, 2002
Buku Teks
Shamim Thahir Ahmad
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2025
UI - Skripsi Membership
R & R Newkirk/Longman, 1985
Buku Referensi
Huebner, S.S.
Appleton Century Crofts, 1972
Buku Teks