APA (7th ed.) Citation

Spencer, H. (1897). The principles of sociology. Appleton.

Chicago Style (17th ed.) Citation

Spencer, Herbert. The Principles of Sociology. New York: Appleton, 1897.

MLA (9th ed.) Citation

Spencer, Herbert. The Principles of Sociology. Appleton, 1897.

Warning: These citations may not always be 100% accurate.