Cita APA (7th ed.)

OBSTETRI WILLIAMS & CUNNINGHAM, F. G. [. (2006). Obstetri williams vol.2.-- ed.21. EGc.

Cita Chicago (17th ed.)

OBSTETRI WILLIAMS i F. Gary [et.al] CUNNINGHAM. Obstetri Williams Vol.2.-- Ed.21. Jakarta: EGc, 2006.

Cita MLA (9th ed.)

OBSTETRI WILLIAMS i F. Gary [et.al] CUNNINGHAM. Obstetri Williams Vol.2.-- Ed.21. EGc, 2006.