Soriano, L. C. (1998). Angono petroglyphs: A ruined cultural legacy. Manila Bulletin.
Chicagoスタイル(17版)引用形式Soriano, Lucino Cali. "Angono Petroglyphs: A Ruined Cultural Legacy." Manila Bulletin 1998.
MLA(9版)引用形式Soriano, Lucino Cali. "Angono Petroglyphs: A Ruined Cultural Legacy." Manila Bulletin, 1998.
警告: この引用は必ずしも正確ではありません.