APA (7th ed.) Citation

Darwin, L. (1928). What is eugenics? (1. publ.). Watts.

Chicago Style (17th ed.) Citation

Darwin, Leonard. What Is Eugenics? 1. publ. London: Watts, 1928.

MLA (9th ed.) Citation

Darwin, Leonard. What Is Eugenics? 1. publ. Watts, 1928.

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