Current Diagnosis & Treatment Obstetrics & Gynecology, 12th Edition by 
Gabbe's Obstetrics: Normal and Problem Pregnancies, Eighth Edition by 
Hacker and Moore's Essentials of Obstetrics and Gynecology by 
Emans, Laufer, Goldstein's pediatric & adolescent gynecology by 
Creasy and Resnik's Maternal-Fetal Medicine: Principles and Practice by 
