Cita APA (7th ed.)

Singer, P. (1997). How are we to live?: Ethics in an age of self-interest (Oxford ed.). Oxford University Press.

Cita Chicago (17th ed.)

Singer, Peter. How Are We to Live?: Ethics in an Age of Self-interest. Oxford ed. Oxford: Oxford University Press, 1997.

Cita MLA (8th ed.)

Singer, Peter. How Are We to Live?: Ethics in an Age of Self-interest. Oxford ed. Oxford University Press, 1997.