(原始内容存档于2021-01-10). HIAA Insurance Education. Fundamentals ofhealthinsurance, Part A. Washington, D.C.: HealthInsuranceAssociationofAmerica. 1997. ISBN 978-1-879143-36-4
Financing ofHealth Care – Part A, HealthInsuranceAssociationofAmerica, 1995, page 9 ISBN 1-879143-26-7 The value of provider networks and the role of out-of-network
and Financing ofHealth Care – Part A, HealthInsuranceAssociationofAmerica, 1995, p. 9 ISBN 1-879143-26-7. "Employer HealthInsurance: 2007," 互联网档案馆的存檔,存档日期October