Birth Works, Inc. 
www.birthworks.org

Birthing from Within
www.birthingfromwithin.com

Childbirth and Postpartum Professional Association (CAPPA) 
www.cappa.net

DONA International 
www.dona.org

International Childbirth Education Association (ICEA)
www.icea.org

Hypnobirthing/The Mongan Method
www.hypnobirthing.com