Reptiles and amphibians of East AfricaStephen Spawls, Kim Howell, Robert C. Drewes · First published 2006Open the Tome
A field guide to the reptiles of East AfricaStephen Spawls, Kim Howell, Robert C. Drewes, James Ashe · First published 2001Open the Tome
A phylogenetic analysis of the Hyperoliidae (Anura)Robert C. Drewes · First published 1984Open the Tome
Report on a collection of reptiles and amphibians from the Ilemi Triangle, southwestern SudanRobert C. Drewes · First published 1972Open the Tome