Makatangay, R. (1999). Health is wealth: At least for the HMOs. IBON Facts & Figures.
Chicago-viite (17. p.)Makatangay, Remir. "Health Is Wealth: At Least for the HMOs." IBON Facts & Figures 1999.
MLA-viite (9. p.)Makatangay, Remir. "Health Is Wealth: At Least for the HMOs." IBON Facts & Figures, 1999.
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