Gaya APA
Cunningham, .
(2017).
Obstetri williams edisi 23 volume 1
(
ed 23 volume 1)
.
Jakarta:
EGC.
Gaya MLA
Cunningham, .
"Obstetri williams edisi 23 volume 1".
ed 23 volume 1
Jakarta:
EGC,
2017.
Text.