Cita APA (7th ed.)

Jaspers, K. (1961). The future of mankind. University of Chicago Press.

Cita Chicago (17th ed.)

Jaspers, Karl. The Future of Mankind. [Chicago]: University of Chicago Press, 1961.

Cita MLA (9th ed.)

Jaspers, Karl. The Future of Mankind. University of Chicago Press, 1961.