The Labor Progress Handbook: Early Interventions to Prevent and Treat Dystocia, 3rd Edition

Penny Simkin is a physical therapist who has specialized in childbirth education since 1968. She serves on the editorial board for Birth: Issues in Perinatal Care and the consultant boards for the International Childbirth Education Association and the Seattle Midwifery School. 

Ruth Ancheta is a certified DONA doula and approved trainer and has been a certified childbirth educator through ICEA for more than twenty years. She has authored numerous childbirth education materials including the Childbirth Skills Teaching Kit and the VBAC Source Book and Teaching Kit.