Cita APA (7a ed.)

Parfit, D., & Scheffler, S. (2011). On what matters. Oxford University Press.

Cita Chicago Style (17a ed.)

Parfit, Derek, y Samuel Scheffler. On What Matters. Oxford: Oxford University Press, 2011.

Cita MLA (9a ed.)

Parfit, Derek, y Samuel Scheffler. On What Matters. Oxford University Press, 2011.