Gaya APA
F. Gary Cunningham, dll.. (2005).
Obstetri Williams .
Jakarta:
Egc.
Gaya Chicago
F. Gary Cunningham, dll..
Obstetri Williams.
Jakarta:
Egc,
2005.
Text.
Gaya MLA
F. Gary Cunningham, dll..
Obstetri Williams.
Jakarta:
Egc,
2005.
Text.
Gaya Turabian
F. Gary Cunningham, dll..
Obstetri Williams.
Jakarta:
Egc,
2005.
Print.