Arias, P. R. (1999). Tutrtle islands as protected area proposed by DENR. Manila Bulletin.
Chicagoスタイル(17版)引用形式Arias, Priscilla R. "Tutrtle Islands as Protected Area Proposed by DENR." Manila Bulletin 1999.
MLA(9版)引用形式Arias, Priscilla R. "Tutrtle Islands as Protected Area Proposed by DENR." Manila Bulletin, 1999.
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