Cita APA (7a ed.)

Borch, C. (2011). Niklas Luhmann. Routledge.

Cita Chicago Style (17a ed.)

Borch, Christian. Niklas Luhmann. Abingdon, Oxon ; New York: Routledge, 2011.

Cita MLA (9a ed.)

Borch, Christian. Niklas Luhmann. Routledge, 2011.