APA (7th ed.) Citation

Spencer, H. (1889). The study of sociology (15. ed.). Paul, Trench, Trübner.

Chicago Style (17th ed.) Citation

Spencer, Herbert. The Study of Sociology. 15. ed. London: Paul, Trench, Trübner, 1889.

MLA (9th ed.) Citation

Spencer, Herbert. The Study of Sociology. 15. ed. Paul, Trench, Trübner, 1889.