Sanders, R. C. (1985). The Principles and Practice of Ultrasonography in Obstetrics and Gynecology.
芝加哥风格引文Sanders, Roger C. The Principles and Practice of Ultrasonography in Obstetrics and Gynecology. 1985.
MLA引文Sanders, Roger C. The Principles and Practice of Ultrasonography in Obstetrics and Gynecology. 1985.
警告：这些引文格式不一定是100％准确.