Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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