1. Deciduous Orchards;Chandler,1965
2. Manual for the identification of Post-harvest Disorders of Pome and Stone Fruit;Eksteen,1987
3. Market Diseases of Stone Fruits. US Department of Agriculture, Agriculture Handbook 414;Harvey,1972
4. McCance and Widdowson's The Composition of Foods;Holland,1991
5. MRC Food Composition Tables;Langenhoven,1991