Glossary of Plant Systematics (1st ed.) by Simpson (2006)
- A science that includes and encompasses traditional taxonomy and that has as its primary goal the reconstruction of phylogeny.
Glossary of "Life (9th ed.)" by Sadava et al. (2011)
- The scientific study of the diversity and relationships among organisms.
- Simpson, M. G. 2006. Plant Systematics. -xi + 590 pp. Elsevier Academic Press, Oxford.
- Sadava, D., Hillis, D. M., Heller, H. C. & Berenbaum, M. R. 2011. Life: The Science of Biology, 9th ed. -xliv + 1266 pp. Sinauer Associates, Inc., Sunderland.