APA (7th ed.) Citation

Jaspers, K., & Ashton, E. B. (1969). Philosophy. University of Chicago Press.

Chicago Style (17th ed.) Citation

Jaspers, Karl, and E. B. Ashton. Philosophy. Chicago: University of Chicago Press, 1969.

MLA (9th ed.) Citation

Jaspers, Karl, and E. B. Ashton. Philosophy. University of Chicago Press, 1969.