Gaya APA
Cuningham, F, G.
(2005).
Obstetri William edisi 21 vol. 2
(
21)
.
JAKARTA:
EGC.
Gaya MLA
Cuningham, F., Gary.
"Obstetri William edisi 21 vol. 2".
21
JAKARTA:
EGC,
2005.
Text.