Cita APA (7th ed.)

Luhmann, N. (2002). Risk: A sociological theory. Aldine Transaction.

Cita Chicago (17th ed.)

Luhmann, Niklas. Risk: A Sociological Theory. New Brunswick, N.J: Aldine Transaction, 2002.

Cita MLA (9th ed.)

Luhmann, Niklas. Risk: A Sociological Theory. Aldine Transaction, 2002.