Gaya APA
Hacke, G, H.
(2010).
Essentials of Obstetrics and Gynecology
(
5th.ed.)
.
Philadelphia:
Saunders Elsevier.
Gaya MLA
Hacke, Gambone,, Hobel.
"Essentials of Obstetrics and Gynecology".
5th.ed.
Philadelphia:
Saunders Elsevier,
2010.
Text.