Gaya APA
CUNNINGHAM, F, G, [. et al
(2006).
OBSTETRI Williams, volume 2
(
Ed. ke 21.)
.
Jakarta:
EGC.
Gaya MLA
CUNNINGHAM, F., Gary, [et.al.]. et al.
"OBSTETRI Williams, volume 2".
Ed. ke 21.
Jakarta:
EGC,
2006.
Buku.