Gaya APA
Wynn, R, M. (1983).
Obstetrics and Gynecology Annual:nineteen eightty-three (vol.12).
USA:
A Publihing Division o prentie-Hall.
Gaya MLA
Wynn, Ralph, M.
"Obstetrics and Gynecology Annual:nineteen eightty-three".
vol.12
USA:
A Publihing Division o prentie-Hall,
1983.
Text.