For this fully revised sixth edition of this perennial bestseller, birthing expert and practicing midwife Melissa Cheyney, PhD, joins Penny for a better-than-ever, completely up-to-date new book. Since the original publication of The Birth Partner, more than a million people--from spouses, partners, relatives, and friends to doulas, nurses, midwives, and childbirth educators--have relied on Penny Simkin's clear, concise, authoritative,...