APA (7th ed.) Citation

Gruber, H. E. (1981). Darwin on man: A psychological study of scientific creativity (2nd ed.). University of Chicago Press.

Chicago Style (17th ed.) Citation

Gruber, Howard E. Darwin on Man: A Psychological Study of Scientific Creativity. 2nd ed. Chicago: University of Chicago Press, 1981.

MLA (9th ed.) Citation

Gruber, Howard E. Darwin on Man: A Psychological Study of Scientific Creativity. 2nd ed. University of Chicago Press, 1981.