APA引文

Levono, K., & Cunningham, F. G. [. (2009). Obstetri Williams Panduan Ringkas. EGC.

Chicago Style (17th ed.) Citation

Levono, Kenneth, and F. Gary [at.al] Cunningham. Obstetri Williams Panduan Ringkas. EGC, 2009.

MLA引文

Levono, Kenneth, and F. Gary [at.al] Cunningham. Obstetri Williams Panduan Ringkas. EGC, 2009.

警告：這些引文格式不一定是100％准確.