FRASER, Michael - MCMAHON, Liz. The smallest kingdom : plants and plant collectors at the Cape of Good Hope. First published. Richmond : Kew Publishing, 2011. 220 stran. Available on Internet: <http://external.dandelon.com/download/attachments/dandelon/ids/DE0067E1C97419D57D702C12578EE003F6A75.pdf> ISBN 978-1-84246-389-5.