Gaya APA

et.al, ., Cunningham, F, G. (2012). Obstetri Williams ed. 23 vol. 1 (Edisi 23, cet. 2013). Jakarta: EGC.

Gaya MLA

et.al, ., Cunningham, F., Gary. "Obstetri Williams ed. 23 vol. 1". Edisi 23, cet. 2013 Jakarta: EGC, 2012. Teks (Text).