6. Cluett, E. R., Nikodem, V.C.,  McCandlish, R.E.,  Burns, E.E. (2002). Immersion in water in pregnancy, labour and birth. The Cochrane Database of  Systematic Reviews 2002, Issue 2. Art. No.: CD000111. DOI: 10.1002/14651858.CD000111.pub2.

7. Eckert, K; Turnbull, D; MacLennan, A. (2001) Immersion in water in the first stage of labor; A randomized controlled trial. Birth, 28 (2) p 84-93.

8. Enkin, Keirse, Neilson, Crowther, Duley, Hodnett and Hofmeyr (Eds) (2000) Control of Pain in Labour, in A Guide to Effective Care in Pregnancy and

9. Elizabeth R Cluett,(2004), Randomised controlled trial of labouring in water compared with standard of augmentation for management of dystocia in first stage of labour, BMJ 2004;328:314 (7 February), doi:10.1136/bmj.37963.606412.EE (published 26 January 2004)

10. Ponette, H. (1995) Water births: My experience of 1600 waterbirths, including breeches and twins. Abstract published for the World Waterbirth Conference, Wimbly Hall, London, England

11. Waterbirth International Practitioner Survey report (2000) – unpublished