APA (7th ed.) Citation

Spencer, H. The genesis of science and the factors of organic evolution. Humboldt.

Chicago Style (17th ed.) Citation

Spencer, Herbert. The Genesis of Science and the Factors of Organic Evolution. New York: Humboldt.

MLA (9th ed.) Citation

Spencer, Herbert. The Genesis of Science and the Factors of Organic Evolution. Humboldt.

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