CUNNINGHAM, F. (2014). Williams Obstetri. McGraw-Hill Book Company.
芝加哥风格引文CUNNINGHAM, F.Gary. Williams Obstetri. McGraw-Hill Book Company, 2014.
MLA引文CUNNINGHAM, F.Gary. Williams Obstetri. McGraw-Hill Book Company, 2014.
警告：这些引文格式不一定是100％准确.
APA引文