1. Of man, animals and morals: a brief history;Brumbaugh,1978
2. Postcommentary: Ethics and animals;Singer;Behav. Brain Sci.,1990
3. Postcommentary: Ethics and animals;Singer;Behav. Brain Sci.,1990
4. Animals, science and ethics,1990
5. Lives in the Balance: The Ethics of Using Animals in Biomedical Research;Smith,1992