Singer, P. (1997). How are we to live?: Ethics in an age of self-interest (Oxford ed.). Oxford University Press.
芝加哥风格引文Singer, Peter. How Are We to Live?: Ethics in an Age of Self-interest. Oxford ed. Oxford: Oxford University Press, 1997.
MLA引文Singer, Peter. How Are We to Live?: Ethics in an Age of Self-interest. Oxford ed. Oxford University Press, 1997.
警告：这些引文格式不一定是100％准确.