Selected bibliography
edit- Antianxiety agents. New York: Wiley. 1986. ISBN 0471807052. (editor)
- Bison: mating and conservation in small populations. New York: Columbia University Press. 1994. ISBN 0231084560. (coauthor)
- Horn of darkness: rhinos on the edge. New York: Oxford University Press. 1997. ISBN 0195111133. (coauthor)
- Large Carnivores and the Conservation of Biodiversity. Island Press. ISBN 1559630809. (coeditor)
- Wild horses of the Great Basin: social competition and population size. Chicago: University of Chicago Press. 1986. ISBN 0226043673. (author)