Cita APA (7th ed.)

Nagel, T. (1987). What does it all mean?: A very short introduction to philosophy. University Press.

Cita Chicago (17th ed.)

Nagel, Thomas. What Does It All Mean?: A Very Short Introduction to Philosophy. New York: University Press, 1987.

Cita MLA (9th ed.)

Nagel, Thomas. What Does It All Mean?: A Very Short Introduction to Philosophy. University Press, 1987.