• Citrus : the genus citrus / edited by Giovanni Dugo and Angelo Di Giacomo. - London [a. o.] : Taylor & Francis, 2002. - XIV, 642 p.: ill. - ( Medicinal and aromatic plants - industrial profiles ;Vol. 26: ) . URL: http://www.loc.gov/catdir/enhancements/fy0646/2006273577-d.html