APA Style
Obstetri Williams Edisi 23 Volume 1. (2012).
jakarta:
EGC.
Chicago Style
Obstetri Williams Edisi 23 Volume 1.
.
jakarta:
EGC,
2012.
Text.
MLA Style
Obstetri Williams Edisi 23 Volume 1.
.
jakarta:
EGC,
2012.
Text.
Turabian Style
Obstetri Williams Edisi 23 Volume 1.
jakarta:
EGC,
2012.
Print.