Cita APA (7th ed.)
Luhmann, N., & Barrett, R. (2012). Theory of society. Stanford University Press.
Cita Chicago (17th ed.)
Luhmann, Niklas, i Rhodes Barrett. Theory of Society. Stanford, Calif.: Stanford University Press, 2012.
Cita MLA (9th ed.)
Luhmann, Niklas, i Rhodes Barrett. Theory of Society. Stanford University Press, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.