1. Official Methods of Analysis,1975
2. Proximate Composition of American Food Materials. Circular No. 545;Chatfield,1940
3. Growth, development and softening of the Deglet Noor date fruit;Coggins;Date Growers' Institute Report,1969
4. Sugars in the fruit of soft, semi-dry and dry commercial date varieties;Cook;Date Growers' Institute Report,1952
5. Inorganic composition of date fruits;Haas;Date Growers' Institute Report,1935