* {{cite book|last1=Schuh|first1=Randall T.|author2=Andrew V. Z. Brower|year=2009|title=Biological Systematics: Principles and Applications, 2nd ed.|isbn=978-0-8014-4799-0}}
* [http://www.sasb.org.au/about-systematics/ Society of Australian Systematic Biologists] {{Webarchive|url=https://web.archive.org/web/20070621150926/http://www.sasb.org.au/about-systematics/ |date=2007-06-21 }}
* [http://www.systematicbiology.org/ Society of Systematic Biologists] {{Webarchive|url=https://web.archive.org/web/20120516162532/http://www.systematicbiology.org/ |date=2012-05-16 }}