- *On the Verge of Extinction:The Life and Times of the Black Rhino* (1993)
- *The Last Rhinos:The Fight to Save One of the Worlds Most Ancient Species* (2014)
Romaner:
- *Regnande eld* (1993)
- *Leopardträdet* (1992)
- *The Eye of Heaven* (1991)
- *Dark Harvest* (1991)