(2002). Synthetic hormone lowers ovarian cancer risk - study. Manila Bulletin.
Cita Chicago (17th ed.)"Synthetic Hormone Lowers Ovarian Cancer Risk - Study." Manila Bulletin 2002.
Cita MLA (9th ed.)"Synthetic Hormone Lowers Ovarian Cancer Risk - Study." Manila Bulletin, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.