APA (7th ed.) Citation

Jaspers, K., & Ashton, E. B. (1961). The future of mankind. University of Chicago Press.

Chicago Style (17th ed.) Citation

Jaspers, Karl, and E. B. Ashton. The Future of Mankind. Chicago: University of Chicago Press, 1961.

MLA (9th ed.) Citation

Jaspers, Karl, and E. B. Ashton. The Future of Mankind. University of Chicago Press, 1961.