1. 1M.M. Al-Mukhtar (1994 ).Nutritional aspects of date with special reference to the tryptophan, lysine and dietary fibre content. MSc Thesis. Glasgow, Strathclyde University.
2. 2S. Al-Showiman (1998 ).`Al Tanr, Ghetha wa Saha'[Trans: Date, Food and Health]. Pp. 62-90. Riyadh, Saudi Arabia: Dar Al-Kheriji Press.
3. 3Department of Health (1991 ).Dietary Reference Values for Food Energy and Nutrients for the United Kingdom.Report on Health and Social Subjects. 41. Report of the Panel on Dietary Reference Values of the Committee on Medical Aspects of Food Policy. Pp. 61-71. London: HMSO.
4. Biochemical changes in some tropical fruits during ripening
5. 5B. Holland, A.A. Welch, I.D. Unwin, D.H. Buss, A.A. Paul, and D.A.T. Southgate (1991 ).Mccance and Widdowson's the Composition of Foods, 5th edn. Cambridge: The Royal Society of Chemistry.