Gaya APA
Cunningham, F. Gary,. (2018).
Williams obstetrics (25th edition.).
New York:
McGraw Hill.
Gaya Chicago
Cunningham, F. Gary,.
Williams obstetrics.
25th edition.
New York:
McGraw Hill,
2018.
Buku.
Gaya MLA
Cunningham, F. Gary,.
Williams obstetrics.
25th edition.
New York:
McGraw Hill,
2018.
Buku.
Gaya Turabian
Cunningham, F. Gary,.
Williams obstetrics.
25th edition.
New York:
McGraw Hill,
2018.
Buku.