Gaya APA
Cunningham, F, G, D.
(2012).
Obstetri William Volume 1
(
Edisi 23)
.
Jakarta:
EGC.
Gaya MLA
Cunningham, F., Gary,, Dkk.
"Obstetri William Volume 1".
Edisi 23
Jakarta:
EGC,
2012.
Text.