Plant Names : a Guide to Botanical Nomenclature. Ed 3 - Roger Spencer; Rob Cross Peter Lumley (Oxford CSIRO Publishing, 2007)
Roger Spencer; Rob Cross & Peter Lumley: Plant Names : a Guide to Botanical Nomenclature. Ed 3. (3rd Ed) Oxford. CSIRO Publishing, 2007. 1-84593-374-6--(581.0216SPE)
ENGLISH