Gaya APA
Cunningham, F, G.
(2005).
Obstetri Williams. Vol.1, Edisi 21
(
Edisi 21)
.
Jakarta:
EGC.
Gaya MLA
Cunningham, F., Gary.
"Obstetri Williams. Vol.1, Edisi 21".
Edisi 21
Jakarta:
EGC,
2005.
Textbook.