Cita APA (7a ed.)

Spencer, H. (1878). The study of sociology (7th ed.). C.K. Paul.

Cita Chicago Style (17a ed.)

Spencer, Herbert. The Study of Sociology. 7th ed. London: C.K. Paul, 1878.

Cita MLA (8a ed.)

Spencer, Herbert. The Study of Sociology. 7th ed. C.K. Paul, 1878.