Cita APA (7a ed.)

Luhmann, N., & Bednarz, J. (1990). Political theory on the welfare state. Gruyter.

Cita Chicago Style (17a ed.)

Luhmann, Niklas, y John Bednarz. Political Theory on the Welfare State. Berlin [etc.]: Gruyter, 1990.

Cita MLA (9a ed.)

Luhmann, Niklas, y John Bednarz. Political Theory on the Welfare State. Gruyter, 1990.