Books
Sasol Eerste Veldgids tot Spinnekoppe en Skerpioene van Suider-Afrika
2016
Sasol First Field Guide to Snakes & other Reptiles of Southern Africa
2015
Sasol First Field Guide to Spiders & Scorpions of Southern Africa
2014
Gardening for Birds
2014
Sasol First Field Guide to Common Birds of Southern Africa
2012
Sasol Eerste Veldgids tot Algemene Voëls van Suider-Afrika
2012