APA (7th ed.) Citation

Gruber, H. E., & Darwin, C. (1981). Darwin on man: A psychological study of scientific creativity. Forew. to the 1. ed. by Jean Piaget (2. ed.). Univ. of Chicago Pr.

Chicago Style (17th ed.) Citation

Gruber, Howard E., and Charles Darwin. Darwin on Man: A Psychological Study of Scientific Creativity. Forew. to the 1. Ed. by Jean Piaget. 2. ed. Chicago: Univ. of Chicago Pr, 1981.

MLA (9th ed.) Citation

Gruber, Howard E., and Charles Darwin. Darwin on Man: A Psychological Study of Scientific Creativity. Forew. to the 1. Ed. by Jean Piaget. 2. ed. Univ. of Chicago Pr, 1981.