Gruen, L. (2011). Ethics and animals: An introduction. Cambridge University Press.
芝加哥风格引文Gruen, Lori. Ethics and Animals: An Introduction. Cambridge ; New York: Cambridge University Press, 2011.
MLA引文Gruen, Lori. Ethics and Animals: An Introduction. Cambridge University Press, 2011.
警告:这些引文格式不一定是100%准确.