Cita APA (7a ed.)

Spencer, H. (1872). Classification des sciences. Libr. Germer Baillière.

Cita Chicago Style (17a ed.)

Spencer, Herbert. Classification Des Sciences. Paris: Libr. Germer Baillière, 1872.

Cita MLA (9a ed.)

Spencer, Herbert. Classification Des Sciences. Libr. Germer Baillière, 1872.