Gaya APA

Cunningham, F, G. et al (2012). Obstetri William = Williams Obstetrics, Volume 1 (Edisi 23). Jakarta: EGC.

Gaya MLA

Cunningham, F., Gary,...[et.al]. et al. "Obstetri William = Williams Obstetrics, Volume 1". Edisi 23 Jakarta: EGC, 2012. Text.