Simmel, G. (1971). On individuality and social forms: Selected writings. University of Chicago Press.
Lua i Stíl Chicago (17ú heag.)Simmel, Georg. On Individuality and Social Forms: Selected Writings. Chicago: University of Chicago Press, 1971.
Lua MLA (8ú heag.)Simmel, Georg. On Individuality and Social Forms: Selected Writings. University of Chicago Press, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.