Parfit, D., & Scheffler, S. (2013). On what matters. Oxford University Press.
Chicago Style (17th ed.) CitationParfit, Derek, and Samuel Scheffler. On What Matters. Oxford [u.a.]: Oxford University Press, 2013.
MLA (8th ed.) CitationParfit, Derek, and Samuel Scheffler. On What Matters. Oxford University Press, 2013.
Warning: These citations may not always be 100% accurate.