Gaya APA
Cunningham,…[et.al], F, G.
(1995).
Obstetri Williams, ed. 18
(
18)
.
Jakarta:
EGC.
Gaya MLA
Cunningham,…[et.al], F., Gary.
"Obstetri Williams, ed. 18".
18
Jakarta:
EGC,
1995.
Text.