Cita APA (7a ed.)

Zweifel, P., & Waser, O. (1992). Bonus options in health insurance. Kluwer Academic Publishers.

Cita Chicago Style (17a ed.)

Zweifel, Peter, y Otto Waser. Bonus Options in Health Insurance. Dordrecht [etc.]: Kluwer Academic Publishers, 1992.

Cita MLA (9a ed.)

Zweifel, Peter, y Otto Waser. Bonus Options in Health Insurance. Kluwer Academic Publishers, 1992.