Ultrasound in Obstetrics and Gynecology.
芝加哥风格引文Ultrasound in Obstetrics and Gynecology.
MLA引文Ultrasound in Obstetrics and Gynecology.
警告：这些引文格式不一定是100％准确.
APA引文
Ultrasound in Obstetrics and Gynecology.
芝加哥风格引文Ultrasound in Obstetrics and Gynecology.
MLA引文Ultrasound in Obstetrics and Gynecology.