APA Style
Cunningham, F, G. et al
(2005).
Obstetri Williams Edisi 21
(
ed. 21)
.
Jakarta:
ECG.
MLA Style
Cunningham, F., Gary. et al.
"Obstetri Williams Edisi 21".
ed. 21
Jakarta:
ECG,
2005.
Buku Teks.