Marfil, M. (1999). Concord covenant useless, say Solons. Philippine Daily Inquirer.
Tohutoru Kātū Chicago (17th ed.)Marfil, Martin. "Concord Covenant Useless, Say Solons." Philippine Daily Inquirer 1999.
Tohutoro MLA (9th ed.)Marfil, Martin. "Concord Covenant Useless, Say Solons." Philippine Daily Inquirer, 1999.
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