Cita APA (7a ed.)
Spencer, H. (1892). Essays Scientific, Political, and Speculative: Volume I.
Cita estilo Chicago (17a ed.)
Spencer, Herbert. Essays Scientific, Political, and Speculative: Volume I. 1892.
Cita MLA (9a ed.)
Spencer, Herbert. Essays Scientific, Political, and Speculative: Volume I. 1892.
Precaución: Estas citas no son 100% exactas.