Marfil, M. (1999). Concord covenant useless, say Solons. Philippine Daily Inquirer.
Chicago-čujuhus (17. p.)Marfil, Martin. "Concord Covenant Useless, Say Solons." Philippine Daily Inquirer 1999.
MLA-čujuhus (9. p.)Marfil, Martin. "Concord Covenant Useless, Say Solons." Philippine Daily Inquirer, 1999.
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