"Caesar's weed". Center for Aquatic and Invasive Plants. University of Florida, IFAS. Archived from the original on 29 July 2015. Retrieved 31 July 2015. Also here
umich.edu
quod.lib.umich.edu
Diderot, Denis. (2007). Aguaxima. Encyclopédie ou Dictionnaire raisonné des sciences, des arts et des métiers, par une Société de Gens de lettres (translation by Malcolm Eden). Retrieved 16 September 2013 from The Encyclopedia of Diderot & d'Alembert Collaborative Translation Project website. Ann Arbor, MI: MPublishing, University of Michigan Library.
"Caesar's weed". Center for Aquatic and Invasive Plants. University of Florida, IFAS. Archived from the original on 29 July 2015. Retrieved 31 July 2015. Also here
