References
- Clayton S. G., Fraser D., Lewis L. T. D. Gynaecology, by ten teachers. Edward Arnold Publishers Ltd, London 1975; 14: 12
- Grady H. G., Smith D. E. The ovary. William and Wilkins Company, Baltimore 1963; 16: 2
- Howkins J., Bource G. Text Book of Gynaecology. Churchill Livingstone 1976; 47: 9