| 圖書| 1. | Singer, Peter(1995)。Practical Ethics。Cambridge University Press。   | | 2. | Regan, Tom(1983)。The Case for Animal Rights。University of California Press。 | 圖書論文| 1. | Singer, Peter(1989)。All Animals are Equal。Animal Rights and Human Obligations。Englewood Cliffs, N. J.：Prentice Hall。 | |