Gaya APA
Gary Cunningham, dkk. (2006).
Obstertri Williams (21).
Jakarta:
EGC.
Gaya Chicago
Gary Cunningham, dkk.
Obstertri Williams.
21
Jakarta:
EGC,
2006.
Text.
Gaya MLA
Gary Cunningham, dkk.
Obstertri Williams.
21
Jakarta:
EGC,
2006.
Text.
Gaya Turabian
Gary Cunningham, dkk.
Obstertri Williams.
21
Jakarta:
EGC,
2006.
Print.