De Guzman, S. A. (1997). Preserving the ancient rock art of Angono. Philippine Daily Inquirer.
Chicago Style (17th ed.) CitationDe Guzman, Susan A. "Preserving the Ancient Rock Art of Angono." Philippine Daily Inquirer 1997.
MLA (9th ed.) CitationDe Guzman, Susan A. "Preserving the Ancient Rock Art of Angono." Philippine Daily Inquirer, 1997.
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