APA (7th ed.) Citation

Osborn, F. 1. (1940). Preface to eugenics. Harper & brothers.

Chicago Style (17th ed.) Citation

Osborn, Frederick 1889. Preface to Eugenics. New York, London: Harper & brothers, 1940.

MLA (9th ed.) Citation

Osborn, Frederick 1889. Preface to Eugenics. Harper & brothers, 1940.

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