APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.