1. David, D. D., The Giant Panda, Fieldiana Zoology Memoirs, 3 (1964).
2. Morris, D., and Morris, R., Men and Pandas (McGraw-Hill, New York, 1966).
3. Sarich, V. M., in Old World Monkeys (edit. by Napier, J. R., and Napier, P. H.), 175 (Academic, New York, 1970).
4. Sarich, V. M., and Wilson, A. C., Science, N.Y., 158, 1200 (1967).
5. Wilson, A. C., and Sarich, V. M., Proc. Natn. Acad. Sci. U.S.A., 63, 1088 (1969).