APA (7th ed.) Citation

Jaspers, K., & Grabau, R. F. (1971). Philosophy of existence. University of Pennsylvania Press.

Chicago Style (17th ed.) Citation

Jaspers, Karl, and Richard F. Grabau. Philosophy of Existence. Philadelphia: University of Pennsylvania Press, 1971.

MLA (9th ed.) Citation

Jaspers, Karl, and Richard F. Grabau. Philosophy of Existence. University of Pennsylvania Press, 1971.