APA
(1986). Journal of obstetrics and Gynecology. New York: Elservier.
Chicago
1986. Journal of obstetrics and Gynecology. New York: Elservier.
Harvard
(1986). Journal of obstetrics and Gynecology. New York: Elservier.
MLA
Journal of obstetrics and Gynecology. New York: Elservier. 1986.
