Cita APA (7a ed.)

Spykman, N. J. (2004). The social theory of Georg Simmel. Transaction publ.

Cita Chicago Style (17a ed.)

Spykman, Nicholas John. The Social Theory of Georg Simmel. New Brunswick (N.J.): Transaction publ, 2004.

Cita MLA (9a ed.)

Spykman, Nicholas John. The Social Theory of Georg Simmel. Transaction publ, 2004.