Cita APA (7a ed.)

Spencer, H. (1966). The works of Herbert Spencer (Library ed., (being the 9nd), whith a postscript.). Zeller.

Cita Chicago Style (17a ed.)

Spencer, Herbert. The Works of Herbert Spencer. Library ed., (being the 9nd), whith a postscript. Osnabrück: Zeller, 1966.

Cita MLA (9a ed.)

Spencer, Herbert. The Works of Herbert Spencer. Library ed., (being the 9nd), whith a postscript. Zeller, 1966.