Não informado. (1961). Journal of Obstetrics and Gynaecology of the British Commonwealth. Royal College of Obstetricians and Gynaecologists.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Journal of Obstetrics and Gynaecology of the British Commonwealth. London: Royal College of Obstetricians and Gynaecologists, 1961.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Journal of Obstetrics and Gynaecology of the British Commonwealth. Royal College of Obstetricians and Gynaecologists, 1961.
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