Cita APA

Spencer, H. 1., & Spencer, H. 1. (1911). Essays on education etc. London: J. M. Dent and Sons Ltd..

Citación estilo Chicago

Spencer, Herbert 1820-1903, y Herbert 1820-1903 Spencer. Essays On Education Etc. London: J. M. Dent and Sons Ltd., 1911.

Cita MLA

Spencer, Herbert 1820-1903, y Herbert 1820-1903 Spencer. Essays On Education Etc. London: J. M. Dent and Sons Ltd., 1911.