1. From The Horse’s Mouth: The Keith Haub Story;Dillon,2006
2. The ethics of agriculture: The end of true husbandry;Rollin,2008
3. Report of the Committee to Consider the Ethical Implications of Emerging Technologies in the Breeding of Farm Animals;Banner,1995
4. An alternative ethic for animals;Comstock,2000
5. The ethical implications of the human-animal bond on the farm;Anthony;Anim. Welf.,2003