APA (7th ed.) Citation

Spencer, H. (1898). The principles of biology / by Herbert Spencer (Rev. and enl. ed.). Williams and Norgate.

Chicago Style (17th ed.) Citation

Spencer, Herbert. The Principles of Biology / by Herbert Spencer. Rev. and enl. ed. London: Williams and Norgate, 1898.

MLA (9th ed.) Citation

Spencer, Herbert. The Principles of Biology / by Herbert Spencer. Rev. and enl. ed. Williams and Norgate, 1898.

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