Makatangay, R. (1999). Health is wealth: At least for the HMOs. IBON Facts & Figures.
Cita Chicago (17th ed.)Makatangay, Remir. "Health Is Wealth: At Least for the HMOs." IBON Facts & Figures 1999.
Cita MLA (9th ed.)Makatangay, Remir. "Health Is Wealth: At Least for the HMOs." IBON Facts & Figures, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.