Template:Robinson et al., 2009
- Robinson, H.E., Schilling, E. & Panero, J.L. 2009. Eupatorieae in Funk, V.A., Susanna, A., Stuessy, T.F. & Bayer, R.J. (eds.) Systematics, Evolution, and Biogeography of Compositae. International Association for Plant Taxonomy, University of Vienna. ISBN 978-3-9501754-3-1. Full text PDF