1. E. C. Andrews, The Development of the Natural Order Myrtaceae .Proc. Linn. Soc. N.S.W.1913 .
2. E. C. Andrews, The Development and Distribution of the Natural Order Leguminosae .Journ. Proc. Roy. Soc. N.S.W.1914 .
3. J. W. BewsPlant forms and their Evolution in South Africa. 1925 .
4. A. EnglerDas Pflanzenreich. 1900 .
5. A. EnglerSyllabus der Pflanzenfamilien. 7th ed., 1912 .