Mercado, J. L. (1998). RP is top killing field for birds and mammals says IUCN Red List. Philippine Star.
Chicagoスタイル(17版)引用形式Mercado, Juan L. "RP Is Top Killing Field for Birds and Mammals Says IUCN Red List." Philippine Star 1998.
MLA(9版)引用形式Mercado, Juan L. "RP Is Top Killing Field for Birds and Mammals Says IUCN Red List." Philippine Star, 1998.
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