Gaya APA
LING, F, W, [., DUFF, P, [.
(2002).
POCKET guide for obstetrics and gynecology:
.
USA:
McGraw-Hill.
Gaya MLA
LING, Frank, W., [ed.]., DUFF, Patric, [ed.].
"POCKET guide for obstetrics and gynecology:".
USA:
McGraw-Hill,
2002.
Buku.