GLOVER, Beverley J. Understanding flowers and flowering. [s.l.]: Oxford University Press, 2007. Dostupné online. ISBN978-0-19-856597-0. (anglicky)
pnas.org
CITERNE, Hélène L. et al. An apparent reversal in floral symmetry in the legume Cadia is a homeotic transformation. Proceedings of the National Academy of Sciences. June 2006, čís. 103(32). Dostupné online.