Williams Obstetrics
Cunningham, F. Gary/Leveno, Kenneth J./Bloom, Steven L./Dashe, Jodi S./Hoffman, Barbara L.
Williams Manual of Obstetrics
Leveno, Kenneth J./Corton, Marlene M./Gant, Norman F./Alexander, James/Bloom, Steven L./Casey, Brian M./Dashe, Jodi S./Sheffield, Jeanne S./Yost, Nicole P.