Author of baby care bible finds new drive The expectant mom on the cover of the new, revised edition of the 25-year-old "bible" on childbirth, What to Expect When You're Expecting, is wearing jeans, standing up, showing off her belly with a proud smile. "She's off her rocker, finally!" author Heidi Murkoff wrote in an e-mail interview of the hot mama fronting the fourth edition of the influential book, which Murkoff first co-authored in 1984. The mom on that original cover was shown in a rocking chair, taking a load off her presumably aching feet.