Tuteur, Amy B. How your baby is born / [electronic resource] / Amy B. Tuteur ; illustrated by Fran Milner and Terry Toyama.. — Emeryville, Calif. : : Ziff-Davis Press,, c1994.. — xi, 224 p. : : col. ill. ; 27 cm. — (How it works). - How it works series (Emeryville, Calif.) .