Cunningham, f. g. (2010). Williams Obstetrics. McGraw-Hill Book Company.
芝加哥风格引文Cunningham, f. gary. Williams Obstetrics. McGraw-Hill Book Company, 2010.
MLA引文Cunningham, f. gary. Williams Obstetrics. McGraw-Hill Book Company, 2010.
警告：这些引文格式不一定是100％准确.