Preker, A. S., Scheffler, R. M., & Bassett, M. C. (2007). Private voluntary health insurance in development: Friend or foen. World Bank.
Citace podle Chicago (17th ed.)Preker, Alexander S., Richard M. Scheffler, a Mark C. Bassett. Private Voluntary Health Insurance in Development: Friend or Foen. Washington, D.C: World Bank, 2007.
Citace podle MLA (9th ed.)Preker, Alexander S., et al. Private Voluntary Health Insurance in Development: Friend or Foen. World Bank, 2007.
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