Citazione Stile APA (7a Edizione)

Preker, A. S., Scheffler, R. M., & Bassett, M. C. (2007). Private voluntary health insurance in development: Friend or foen. World Bank.

Citazione stile Chigago Style (17a edizione)

Preker, Alexander S., Richard M. Scheffler, e Mark C. Bassett. Private Voluntary Health Insurance in Development: Friend or Foen. Washington, D.C: World Bank, 2007.

Citatione MLA (9a ed.)

Preker, Alexander S., et al. Private Voluntary Health Insurance in Development: Friend or Foen. World Bank, 2007.