De Guzman, S. A. (1997). Preserving the ancient rock art of Angono. Philippine Daily Inquirer.
Chicagoスタイル(17版)引用形式De Guzman, Susan A. "Preserving the Ancient Rock Art of Angono." Philippine Daily Inquirer 1997.
MLA(9版)引用形式De Guzman, Susan A. "Preserving the Ancient Rock Art of Angono." Philippine Daily Inquirer, 1997.
警告: この引用は必ずしも正確ではありません.