APA
Ratnam S., Soon-Chye nG & SArulkumaran. (2000). Contributions to Obstetrics and Gynacology. Singapore: Oxford.
Chicago
Ratnam S.S, Soon-Chye nG and SArulkumaran. 2000. Contributions to Obstetrics and Gynacology. Singapore: Oxford.
Harvard
Ratnam S., Soon-Chye nG and SArulkumaran. (2000). Contributions to Obstetrics and Gynacology. Singapore: Oxford.
MLA
Ratnam S.S, Soon-Chye nG and SArulkumaran. Contributions to Obstetrics and Gynacology. Singapore: Oxford. 2000.
