Alcaraz, R. B. (2008). Putting the digestive system back on track. Manila Bulletin.
Cita Chicago (17th ed.)Alcaraz, Rowena Bautista. "Putting the Digestive System Back on Track." Manila Bulletin 2008.
Cita MLA (9th ed.)Alcaraz, Rowena Bautista. "Putting the Digestive System Back on Track." Manila Bulletin, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.