1. Waters, W.E. (1969). Prevalence of symptoms of urinary tract infection in women. Br. J. Preventive Soc Med., 23, 263–266
2. Brooks, D. and Mallick, N. (1982). Infections of the urine and urinary tract. In Renal Medicine and Urology. p. 56. ( Edinburgh: Churchill Livingstone )
3. Asscher, A. W. (1980). The Challenge of Urinary Tract Infections. ( London: Academic Press )
4. Gallagher, D. J. A., Montgomerie, J. Z. and North, J. D. K. (1965). Acute infections of the urinary tract and the urethral syndrome in general practice. Br. Med. J., 1, 622–626
5. Asscher, A. W., Sussman, M., Waters, W. E. et al. (1966). Urine as a medium for bacterial growth. Lancet, 2, 1037–1039