Gaya APA
...(et.al), F, G, C.
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Obstetri Williams, Edisi 23 Volume 2
(
Edisi 23)
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Jakarta:
EGC.
Gaya MLA
...(et.al), F., Gary, Cunningham.
"Obstetri Williams, Edisi 23 Volume 2".
Edisi 23
Jakarta:
EGC,
2012.
Text.