Gaya APA

Benson, R, C., Pernoll, M, L. (1994). Handbook Of Obstetrics and Gynecology (9th.Ed.). Singapore: McGraw-Hill International.

Gaya MLA

Benson, Ralph, C.., Pernoll, Martin, L.. "Handbook Of Obstetrics and Gynecology". 9th.Ed. Singapore: McGraw-Hill International, 1994. Text.