1. Citrus Varieties of the World;J Saunt,2000
2. The Citrus Industry;RW Hodgson,1967
3. Citrus Fruit;MS Ladaniya,2008
4. Major citrus cultivars of the world as reported from selected countries;RE Rouse;HortScience,1988
5. Foreign Agricultural Service/USDA O of GA. Citrus: World Markets and Trade. 2016. Available: http://www.fas.usda.gov/data/citrus-world-markets-and-trade