Cunningham, f. g., & PENDIT, B. (2012). Obstetri Williams 1. EGC.
芝加哥风格引文Cunningham, f. gary, 与 Brahm.U PENDIT. Obstetri Williams 1. EGC, 2012.
MLA引文Cunningham, f. gary, 与 Brahm.U PENDIT. Obstetri Williams 1. EGC, 2012.
警告：这些引文格式不一定是100％准确.
APA引文