APA (7th ed.) Citation

(1950). The proper study of mankind. An inquiry into the science of human relations. Phoenix House.

Chicago Style (17th ed.) Citation

The Proper Study of Mankind. An Inquiry into the Science of Human Relations. Phoenix House, 1950.

MLA (8th ed.) Citation

The Proper Study of Mankind. An Inquiry into the Science of Human Relations. Phoenix House, 1950.

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