Symonds, E. M., & Symonds, I. M. (2004). Essential obstetrics and gynaecology (4th ed.). Churchill Livingstone.
Lua i Stíl Chicago (17ú heag.)Symonds, E. Malcolm, agus Ian M. Symonds. Essential Obstetrics and Gynaecology. 4th ed. Edinburgh, UK: Churchill Livingstone, 2004.
Lua MLA (9ú heag.)Symonds, E. Malcolm, agus Ian M. Symonds. Essential Obstetrics and Gynaecology. 4th ed. Churchill Livingstone, 2004.
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