Gaya APA
F. Gary Cuningham, et.al. (2001).
Williams Obstetrics .
USA:
McGraw-Hill.
Gaya Chicago
F. Gary Cuningham, et.al.
Williams Obstetrics.
USA:
McGraw-Hill,
2001.
BUKU.
Gaya MLA
F. Gary Cuningham, et.al.
Williams Obstetrics.
USA:
McGraw-Hill,
2001.
BUKU.
Gaya Turabian
F. Gary Cuningham, et.al.
Williams Obstetrics.
USA:
McGraw-Hill,
2001.
BUKU.