Cacti and Succulent Handbook, Expanded 2nd EditionGideon F. Smith · First published 2022Open the Tome
Sasol Eerste Veldgids Tot Grassoorte in Suider-AfrikaGideon Smith · First published 2004Open the Tome
Sasol First Field Guide to Grasses of Southern AfricaGideon Smith · First published 2004Open the Tome