Cita APA (7a ed.)

Zweifel, P., & Frech, H. (1992). Health economics worldwide. Kluwer Academic Publishers.

Cita Chicago Style (17a ed.)

Zweifel, Peter, y H.E Frech. Health Economics Worldwide. Dordrecht [etc.]: Kluwer Academic Publishers, 1992.

Cita MLA (9a ed.)

Zweifel, Peter, y H.E Frech. Health Economics Worldwide. Kluwer Academic Publishers, 1992.