Gaya APA
Williams, John Whitridge. (2010).
Williams obstetrics 23rd ed. (23rd ed.).
:
.
Gaya Chicago
Williams, John Whitridge.
Williams obstetrics 23rd ed..
23rd ed.
:
,
2010.
Text.
Gaya MLA
Williams, John Whitridge.
Williams obstetrics 23rd ed..
23rd ed.
:
,
2010.
Text.
Gaya Turabian
Williams, John Whitridge.
Williams obstetrics 23rd ed..
23rd ed.
:
,
2010.
Print.