APA (7th ed.) Citation

Spencer, H. (1966). The principles of sociology (Reprint of the ed. 1897.). Otto Zeller.

Chicago Style (17th ed.) Citation

Spencer, Herbert. The Principles of Sociology. Reprint of the ed. 1897. Osnabrück: Otto Zeller, 1966.

MLA (9th ed.) Citation

Spencer, Herbert. The Principles of Sociology. Reprint of the ed. 1897. Otto Zeller, 1966.

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